Mineralogical Magazine, 59(3), 383-399. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 70, 309; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 393, 404. Lunev E. S. (2016) Foid minerals from malignites of the Pokrovo-Kireevo massif (Azov Sea region, Ukraine). Mineralogical Record 12, 29-38. В., СОБОЛЕВ, В. In The 33rd international geological congress in Oslo (Norway) (pp. 5. American Mineralogist, Volume 74, pages 132-140, 1989, Rocks and Minerals, (2001) 76:257; Rocks and Minerals, (1976) 51:495-507; Erickson, Ralph Leroy; Blade, Lawrence Vernon (1963) Geochemistry and petrology of the alkalic igneous complex at Magnet Cove, Arkansas. Interference Figure: … Johnson (2014), A New Find of Complex Na-Zr Silicates in the Stettin Complex, Marathon County, Wisconsin, a presentation before ther 41st. This hexagonal crystal is oriented with its optic axis vertical. Geology of Massachusetts and Rhode Island, 1917. The geology of Socotra island, Gulf of Aden. Mineralogy and Petrology, 108(3), 371-390. : 54: 267-285. Emerson, 1917. Riggs,K.A.,(1976) Subsurface Precambrian Granite,Lafayette County, Mississippi:American Association Of Petroleum Geologists Bulletin,v.60,p.455-457, Gobla, M.J. (2012) Montana mineral locality index. Tran, H. T., Polyakov, G. V., Tran, A. T., Borisenko, A. S., Izokh, A. E., Balykin, P. A., ... & Pham, D. T. (2016). Note pyroxene cleavage (roughly 90 degrees) in lower left of crystal. The description is provided as a guide as to what to expect, but buyers should identify the rock type and minerals for themselves. This is a thin section microscope slide of a Quartz Syenite from Ben Loyal, Highlands, Scotland. Nilsen Quarry, the Langesundsfjord District, Norway, collected by Jens Andreas Larsen in February 2015. Riebeckite Na2[(Fe2+;Mg)3Fe 3+ 2]Si8O22(OH)2 °c 20 1M i nera lD t Pub sh g, v o . MinRec 14:51; Rocks and Minerals 66:6, p453; Cannon, B. From shop NewAgeStonesJewelry. USGS Bulletin: 2062; Woolley, A.R. RELATED ARTICLES MORE FROM AUTHOR. King, V. and Foord, E., 1994, Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, pp. Dev., 14, 25-34. Journal of Asian Earth Sciences, 109, 1-19. Crystal Data: Monoclinic. Surv. Buchholz, W.B. (2010) Source and Evolution of Molybdenum in the Porphyry Mo(^Nb) Deposit at Cave Peak,Texas. NORWEGIAN JOURNAL OF GEOLOGY Mineralogy of aegirine … : 102; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. This work is a part of petrology and helps to reveal the origin and evolution of the parent rock. Gabbro thin section. : 246; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 393.; USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. Woolley A.R. Chakhmouradian A.R., Mitchell R.H. (2002): The mineralogy of Ba- and Zr-rich alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic and sodic agpaitic pegmatites. Basalt thin section. The stones are spaced with antiqued brass. Rocks and Minerals 87:208-240. Patches of analcime However, jadeitic pyroxenes in this specimen are not in contact with quartz. Journal of Petrology 51(8),1739-60. Intraplate magmatism and metallogeny of North Vietnam. United States Geological Survey, Bulletin 354, 228 pages. Geology of Massachusetts and Rhode Island, p.197-198, Sears, JH, 1905, Geology of Essex County, Mass, Gleba, 1978. Woolley A.R. Journal of volcanology and geothermal research, 25(3-4), 225-248. doi.org/10.1016/0377-0273(85)90014-9 specimen number: 8032222. location: Mt Malosa, Zomba, Malawi. Minerals of Virginia 1990 by R. V. Dietrich. Draw how KFsp crystallized around sodalite. Electron microprobe analysis indicated that scandium presents in the grains. A peculiar material that is colourless in thin section is described from Bayan Obo, China (Ribeiro Da Costa et al., 2014). It is monoclinic. Toulmin, P., 1957, Notes on a Peralkaline Granite from Cashes Ledge, Gulf of Maine, American Mineralogist, 42: 912-915. Quarterly Journal of the Geological Society, London, 125(1-4), 413-446. doi.org/10.1144/gsjgs.125.1.0413. ; American Mineralogist: (1983) 68: 245-254. For details of the mineralogy see The passion for the optical petrography inspired me to create this website with the aim to provide a tool that would ease the recognition and identification of mineral phases in thin section. The feldspar alteration is similar to that in the diorite porphyry. Ore Geology Reviews, 44, 82-106. USGS Professional Paper: 1049-F, "Minerals of Colorado, updated & revised", p. 16, by Eckel, Edwin B., 1997; USGS Prof Paper 649, "Minerals of Colorado, updated & revised", p. 16, by Eckel, Edwin B., 1997. Nepheline (K-21) is colorless when viewed Mineralogical Magazine 45:87-99. Minéralo. Mineralogical Magazine 43:363-370. Cross, W. and Penrose, R.A.F. 5 out of 5 stars (22) 22 reviews $ 34.00. Carbonatites in Phong Tho, Lai Chau Province, north–west Vietnam: Their petrogenesis and relationship with Cenozoic potassic alkaline magmatism. http://jncc.defra.gov.uk/pdf/gcrdb/GCRsiteaccount1219.pdf. Franç. Midwest Chapter Newsletter Volume 29 No.6:5-6, V.C. Beydoun, Z. R., & Bichan, H. R. (1969). description: A wonderful example for the species with lustrous black terminated crystals to 6.0 cm in length coming off a thin matrix with white blocky orthoclase crystals. Capaldi, G., Manetti, P., & Piccardo, G. B. Collection and photo OT. (2014). [MinRec 16:143], Miller, C. E. (1971) Rhode Island Minerals and Their Locations, O. D. Hermes, Ed., University of Rhode Island, Kingston, Gems & Minerals 395 (August, 1970). The thin section contains green-coloured aegirine pyroxene with characteristic patchy colour variations, biotite mica, and large grains of nepheline that have undergone alteration and exsolution to plagioclase. 33rd International Geological Congress (2008) session MPI-07 Alkaline and carbonatite magmatism and related ore deposits: Carbonatites in Phong Tho, Lai Chau Province, Northwest Vietnam: Their petrogenesis and relationship with Cenozoic Potassic Alkaline magmatism. Zircon U–Pb ages and Hf isotopic compositions of alkaline silicic magmatic rocks in the Phan Si Pan-Tu Le region, northern Vietnam: identification of a displaced western extension of the Emeishan Large Igneous Province. A photograph of a rock in thin section. introduction page for some background on how these videos were prepared and processed, and for additional useful information on the included table content, the search tab, and other user-adjustable features.. USGS Professional Paper 300 pp587-592. Intraplate magmatism and metallogeny of North Vietnam. 9 - Minerals in Thin Section-University of North Carolina 10 - Online Mineral Museum 11 - QUT Mineral Atlas 12 - Ruff.Info 13 - UCLA - Petrography Thin-Sections 14 - WWW-MINCRYST Search for Hypersthene using: Morton (1969), Eclogite inclusions in kimberlite pipes at Garnet Ridge, northeastern AZ, Am.Min. Twinning: Simple or multiple twinning k f100g. Tran, T. H., Lan, C. Y., Usuki, T., Shellnutt, J. G., Pham, T. D., Tran, T. A., ... & Borisenko, A. S. (2015). 34, pp.335-347 (1996); Virginia T. McLemore and James R. Guilinger, (1993) Geology and mineral resources in the Cornudas Mountains, Otero County, New Mexico and Hudspeth County, Texas pp. Howieite. W. D. (1970): Cavity Minerals At Summit Rock. Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Gobla, M.J. (2012) Montana mineral locality index. A thin section Fig. This optical mineralogy/petrography video is part of the "video atlas of minerals in thin section" library at https://www.rockptx.com. ~ However if you are not satisfied with any slide I will refund the purchase price if you return the slide within 7 days. Summerlin, E. (2014). (1997): Handbook of Mineralogy, Vol. Petrol., 143, 93-114. Springer International Publishing. Be the first to submit a review on this product! Photograph of a sample of the nepheline syenite pegmatite showing a crystal of dark aegirine several centimeters in size (indica-ted with an arrow) at the upper right corner. Visit gemdat.org for gemological information about Aegirine . Emerson, B.K. 31: 125-130; McSwiggen, P. L., Morey, G. B., & Cleland, J. M. (1994). Tran, H. T., Polyakov, G. V., Tran, A. T., Borisenko, A. S., Izokh, A. E., Balykin, P. A., ... & Pham, D. T. (2016). Canadian Journal of Earth Sciences 50:678-691. This sample (WS23) is a nepheline-sodalite syenite from near Red Hill, NH. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Louderback, George Davis & Walter C. Blasdale (1909), Benitoite, its mineralogy, paragenesis and mode of occurrence: University of California, Department of Geological Sciences Bulletin: 5: 363; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 298; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 392.; William S. Wise (1982) Strontiojoaquinite and bario-orthojoaquinite: two new members of the joaquinite group . Morrill, P., 1958, Maine Mines and Minerals. (2019) Alkaline Rocks and Carbonatites of the World. Geologic map of the Yemen Arab Republic. Geochemistry and origin of some unusually oxidized alkaline rocks from Kauai, Hawaii. American Mineralogist 67:809-816. Uranium deposits associated with Na-metasomatism from central Ukraine: a review of some of the major deposits and genetic constraints. The refractive indices are α=1.742,β=1.778,γ=1.783,γ-α=0.041,extinction angle is c∧X=1 〜3 , and optical axial angle is 2Vα=65 In super condition all around. Petrogenesis of Late Permian silicic rocks of Tu Le basin and Phan Si Pan uplift (NW Vietnam) and their association with the Emeishan large igneous province. Jour. Jadeite is a pyroxene mineral with composition NaAlSi2O6. 6. Usuki, T., Lan, C. Y., Tran, T. H., Pham, T. D., Wang, K. L., Shellnutt, G. J., & Chung, S. L. (2015). To link to this object, paste this link in email, IM or document To embed this object, paste this HTML in website. Aegirine syenite. (1988) Geology and resources of thorium and associated elements in the Wet Mountains area, Fremont and Custer counties, Colorado. U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. American Mineralogist. ; Rocks & Minerals (1986): 61: 286-289, SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills". Numerous veins of chlorite traverse the section. Aegirine with Orthoclase. Bulletin volcanologique, 46(4), 413. Г., МИТРОХИН, А. Masses sufficiently large for cutting are found in the norite of the Kupferberg in the Fichtelgebirge, and in the serpentine of Kraubat near Leoben in Styria. Aegirine is a member of the pyroxene group, and forms a series with the mineral Augite.It is well known for its long slender crystals with very distinctive terminations, and some of the more lustrous forms of this mineral are true classics.s, and some of the more lustrous forms of this mineral are true classics. Point Group: 2=m: As prismatic crystals, to 20 cm. It is usually light-colored and fine-grained, with minor amounts of mafic minerals,[1] and is formed by the rapid cooling of lava enriched with silica and alkali metals. This area is the home to many very special minerals, formed by the intrusion of … Fluorite in Thin Section Thin section photos courtesy of Alessandro Da Mommio of alexstrekeisen.net. Johnston, A. D., Stout, J. H., & Murthy, V. R. (1985). Ryabchikov, I.D., Kogarko, L.N., Krivdik, S.G., and Ntaflos, T. (2008): Geology of Ore Deposits 50(6), 423-432. file ID #10033580. Mineralogical Magazine. The micas and calcite have this surface damage effect too, but not so strongly. The thin section contains green-coloured aegirine pyroxene with characteristic patchy colour variations, biotite mica, and large grains of nepheline that have undergone alteration and exsolution to plagioclase. Commonly ¯brous, asbestiform; earthy, massive. ... Next article Aegirine (Acmite) thin section. Crystal Data: Monoclinic. The term gabbro was used originally by Italian … Please contact us for more information. (1990) Microbanded manganese formations; protoliths in the Franciscan Complex, California; USGS Professional Paper 1502. Aegirine-augite in the upper left corner; in the lower right is an inclusion of hornblende and feldspar that also contains aegirine-augite. Intraplate magmatism and metallogeny of North Vietnam. p 213. (1913) Two vanadiferous aegirites from Libby, Montana American Journal of Science. Sodalite, colorless and transparent in thin section, but frequently pale blue in the hand specimens, is the principal feldspathoid mineral in addition to nepheline. aegirine, eudialyte ,apatite, potassic-arfvedsonite nepheline syenite Zr FKM-63 Mahenge, Morogoro, Tanzania spinel group (spinel [in hand sample but not in thin section]), calcite, amphibole (F-rich pargasite), mica (biotite chlorite Media in category "Rocks in thin section" The following 172 files are in this category, out of 172 total. 27-feb-2012 - Aegirine in thin section (type of clinopyroxene) Mineral. www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf. Bargar, K.E. Large crystals of nepheline and sodalite surrounded by aenigmatite can be seen in the section. Thin section of a phonolite from Tenerife was also analyzed by Raman spectroscopy. This is a thin section microscope slide of a rare rock from the Khibiny Area of the Kola Peninsular. A catalogue of minerals & textures in thin section Ruth Siddall, University College London Minerals are listed in the order in which they appear in Deer, Howie & Zussman (1992). Massachusetts Mineral & Fossil Localities. & Keith, T.E.C. Vesuvius, plane polars Colorless fluorite with green amphiboles from Mt. Mineralogical Magazine 43:363-370.; Robert Muir Wood (1982) The Laytonville Quarry (Mendocino County California) Exotic Block: Iron-rich Blueschist-Facies Subduction-Zone Metamorphism. : 102; Watson, K.D. In a thin section the pleochroism is slight : X=yellowish brown, Y=brownish yellow and Z=yellow. Thin Section Microscope Slide, Chloritoid Mica Schist, Scotland Thin Section Microscope Slide, Blue Tourmaline Pegmatite Portsoy Scotland Thin Section Microscope Slide, Lazulite Metasandstone, Madagascar. Holbrook (1950) Titanium Ore Deposit of Hot Spring County Arkansas, Bulletin 16 Arkansas Geological Survey, Rocks and Minerals, (1988) 63:104-125; Rocks and Minerals, (1989) 64:314-322, Peacor, D., Dunn, P. J. Combined statistics, Petrography and Geochemistry for the definition of ore types in Krivoy Rog Iron Province (Ukraine). Photograph of a sample of the nepheline syenite pegmatite showing a crystal of dark aegirine several centimeters in size (indica-ted with an arrow) at the upper right corner. A variety of Enstatite An iron(II)-bearing variety of enstatite. This optical mineralogy/petrography video is part of the "video atlas of minerals in thin section" library at https://www.rockptx.com. (1983). (2012) Montana Mineral Locality Index. Microphotographs of minerals and selected rocks in thin section, making using polarizing microscopy with cross and reflected light. Occurrence and genetic implications of hyalophane in manganese-rich iron-formation, Cuyuna Iron Range, Minnesota, USA. Tran, H. T., Polyakov, G. V., Tran, A. T., Borisenko, A. S., Izokh, A. E., Balykin, P. A., ... & Pham, D. T. (2016). Aegirine activates the Base, or Root Chakra, located at the base of the spine, and controls the energy for kinesthetic feeling and movement. It is well known for its action to break the hold of negative beings that may already be attached to you, as well as being very useful for prevention. thin section. Bull. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed. Canadian Mineralogist Vol. Dale, 1908. The green fiber like crystals are aegirine. Journal of Asian Earth Sciences, 97, 102-124. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. This means that biotite in standard thin sections rarely goes completely extinct. Aegirine syenite, Shawa, Zimbabwe: Aegirine syenite. Alex Strekeisen - I vetrini della mia fantasia. Grolier, M. J., & Overstreet, W. C. (1978). Page, L. R.; Stocking, H. E.; Smith, H. B. Thin section photos courtesy of Alessandro Da Mommio of alexstrekeisen.net. Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 284. Rocks & Minerals, 87, #3, 208-240. USGS Prof. Paper 425, Art Smith (2001) Mineral News, 17, #11.; Barwood, H. (2015) Field Trip Report Various Arkansas collection sites . 418 + 88 plates. Fryklund and D.F. The website is designed for students of geology, petrography and geology enthusiasts, and for … Rocks and Minerals in Thin Section, Second Edition: A Colour Atlas CRC Press W.S. In very good condition and choice for the species. Colorless fluorite with green amphiboles from Mt. There you'll… aegirine-augite in thin section FKM-249 PPL polarizer rotation on Vimeo 293-296. Huebner, J. Stephen; Flohr, Marta J. Patches of analcime zeolite are present, exhibiting characteristic radial growth patterns. 27-feb-2012 - Aegirine in thin section (type of clinopyroxene) Zircon U–Pb ages and Hf isotopic compositions of alkaline silicic magmatic rocks in the Phan Si Pan-Tu Le region, northern Vietnam: identification of a displaced western extension of the Emeishan Large Igneous Province. Point Group: 2=m: Prismatic crystals, showing f110g, with blunt to steep terminations, to 35 cm, striated lengthwise, can be bent or Variously described in the texts an Nordmarkite and Pulaskite, it is part of an alkaline intrusion. 3). Aegirine-Augite Syenite from Gundlapalle 95 it shows bent lamellae. ; Beeson, M.H. Gobla, M. J. Dale, T. Nelson and Gregory Herbert E. (1911): The Granites of Connecticut (USGS Bulletin 484). 13), 1-212. • Cross, W. (1915): The lavas of Hawaii and their relations, United States Geological Survey, Washington, Velde, D. (1978): An aenigmatite-richterite-olivine trachyte from Puu Koae, West Maui, Hawaii, American Mineralogist, Vol. & D.M. www.koeln.netsurf.de/~w.steffens/usa.htm. The feldspar shows evidence of extensive exsolution to orthoclase and plagioclase, and is mottled when viewed in plane polarised light. "Minerals of Colorado, updated & revised", p. 17, by Eckel, Edwin B., 1997; USGS ProfessionaL Paper 197A; Theodore J. Armbrustmacher, (1981) The complex of alkaline rocks at Iron Hill, Powederhorn district, Gunnison County, Colorado. UGMS Bull 117 Minerals and Mineral Localities of Utah. Audétat, A. The authors regard these pyroxenes as the case 2) (see Fig. 36: 290- 296. (2019) Alkaline Rocks and Carbonatites of the World. Point Group: 2=m: Prismatic crystals, showing f110g, with blunt to steep terminations, to 35 cm, striated lengthwise, can be bent or twisted. Mineralogical Magazine 43:363-370.; Robert Muir Wood (1982) The Laytonville Quarry (Mendocino County California) Exotic Block: Iron-rich Blueschist-Facies Subduction-Zone Metamorphism. 1. Mineral Species of Arkansas, addenda. [5] Trachyte is common wherever alkali magma … The specimen was collected by Jens Andreas Larsen. This optical mineralogy/petrography video is part of the "video atlas of minerals in thin section" library at https://www.rockptx.com. Thin section 1025. Tran, H. T., Polyakov, G. V., Tran, A. T., Borisenko, A. S., Izokh, A. E., Balykin, P. A., ... & Pham, D. T. (2016). (2012). Vol. : 35: 500-507 (1950), Milton, C. & Davidson, N.: 500, [MinRec 15:151]; 4th Annual New Mexico Mineral Symposium (1985) New Mexico Geology 7:18-19. Howieite. Sci., v. 45 (4th series), p. 377-410. Jour. It has a Mohs hardness of about 6.5 to 7.0 depending on the composition. Augite thin section photomicrographs are taken in plane-polarized light and cross-polarized light, and can easily be recognized under the microscope. 3, 42, Pallen, Len, 1963, World News on Mineral Localities - Wisconsin, Rocks and Minerals, #297, p. 582. Soc. The Geology of NH: Part III Minerals and Mines. Dale, Thomas Nelson (1908): The Chief Commercial Granites of MA, NH, and RI (USGS Bulletin 354). ~ Some features will require a polarising microscope to view. U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. Armbrustmacher, T. J. Thin Section Microscope Slide. Mineralogy of Michigan (2004) Heinrich & Robinson, Grout, F.F. In International Field Workshop. Macdonald, G. A., Davis, D. A., & Cox, D. C. (1960). A small sample of the rock from which this slide was cut is also usually included, sometimes this is not possible if no offcuts are available at time of sale. Syenites are named for the city of Syene, Egypt, where many ancient monuments are made of this mostly light-colored stone. p.47, Am.Min. FOV 5.18 mm. This is called "incomplete extinction" or sometimes "birds eye maple extinction". General Aegirine Information : Chemical Formula: NaFe+++Si2O6 : Composition: Molecular Weight = 231.00 gm Sodium 9.95 % Na 13.42 % Na 2 O: Iron 24.18 % Fe 34.56 % Fe 2 O 3: Silicon 24.32 % Si 52.02 % SiO 2: Oxygen 41.56 % O: 100.00 % 100.00 % = TOTAL OXIDE Dale, T.N. There you'll… There you'll… omphacite/aegirine-augite in thin section … U. S. Geological Survey; Corporacion Venezolana de Guayana. Tran, T. H., Lan, C. Y., Usuki, T., Shellnutt, J. G., Pham, T. D., Tran, T. A., ... & Borisenko, A. S. (2015). Digest: 3: 53-56. 1a, b), and are rare in the thin section studied. Photographs below are of the actual slide you will receive. Aegirine was named by Norweigan mineralogist Hans Morten Thrane Esmark (1801–1882). This sample is from Cnoc Nan Cuilean and is rich in aegirine, with acessory sphene. Adams, K.H. (circa 1980s), Untitled manuscript on central Connecticut mineralogy. В., КРИВДИК, С. It is generally twinned having an anorthite content varying from 26~ to 29~. Chi, N. T., Flower Martin, J. F., & Hung, D. T. (2008, August). Arnold, Ralph & Robert Anderson (1910), Geology and oil resources of the Coalinga district, California: USGS Bulletin 398: 158; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 68-69, 309; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 368, 392. We report the occurrence of aegirine from metamorphic rocks associated to the Bayan Obo REE-Fe-Nb ore deposits (Inner Mongolia), which displays a peculiar optical characteristic, being colourless in thin section. Е. This optical mineralogy/petrography video is part of the "video atlas of minerals in thin section" library at https://www.rockptx.com. This is a thin section microscope slide of a Quartz Syenite from Ben Loyal, Highlands, Scotland. Watch Specimen Video. Soc. American Mineralogist. My catalogue number 9058. Cristallo. The Commercial Granites of MA, NH, and RI. 71, (1996); Eggleston, J. W., 1918, Eruptive rocks at Cuttingsville, Vermont: Am. Thin section of monzonite porphyry from Bulldog Ridge: flow lines commonly are more distinct in the monzonite porphyry than in the diorite porphyry. Besides the Myers, P.E., The Wausau syenite of Central Wisconsin, Abs., Institute on lake Superior Geology, p. 42, 1976. 7. Alex Strekeisen - I vetrini della mia fantasia Nepheline - Na 3 (Na,K)[Al 4 Si 4 O 16] Nepheline, from the Greek "nephele" for "cloud" (since it turns cloudy when treated with strong acid) is a minerals of the feldspathoid group. IAGOD Field trip. Barker, J.C., and Mardock, C.L., 1990, Rare-earth-element-and yttrium-bearing pegmatite dikes near Dora Bay, southern Prince of Wales Island: U.S. Bureau of Mines Open-File Report OFR 19-90, 41 p. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed. Home Rocks and Minerals Augite (thin section) Reference URL Share . 5, Koksha Valley (Kokscha Valley; Kokcha Valley), Harts Range (Harts Ranges; Hartz Range; Hartz Ranges), East Ujimqin Banner (Dongwuzhumuqin Co.; Dongwu Qi), Akesu Prefecture (Aksu Prefecture; Aqsu Prefecture), Bayin'gholin Autonomous Prefecture (Bayingolin Autonomous Prefecture; Bayinguoleng Autonomous Prefecture), Changji Autonomous Prefecture (Sanji Autonomous Prefecture), Kashi Prefecture (Kashgar Prefecture; Qeshqer Prefecture), Jiashi County (Peyziwat Co.; Payzawat Co.), Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture), Tuamotu-Gambier (Tuamotu and Gambier Islands), Valle della Legna (Vallée de l'Alleigne), Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Iwo Jima (Iou-to; Iou Island; Iwojima; Iou-jima; Naka-Iou-jima), Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts), Biraya and Bya Rivers confluence area (Chara Basin), Upper Chegem volcanic caldera (Verkhnechegemskaya caldera), Enisei Range (Yenisei Ridge; Enisei Ridge), The Carbonatite Stock in the vicinity of Tul'ilukht Bay, Ngaka Modiri Molema District Municipality, Papago Mining District (Sierrita Mining District), Cheyenne Mining District (St. Peters Dome Mining District), White Earth Mining District (Powderhorn Mining District), La Plata Mining District (California Mining District), Bald Mountain Mining District (Portland Mining District). Colorless fluorite with green amphiboles from Mt. Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Cross-polarized light, field width is 6 mm. (1975): Minerals of Washington, p.49, Minerals of Washington, Bart Cannon, 1975, R&M 73:11-12 pp 378-399 Wisconsin Mineral Locality Index. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Rochester Mineralogical Symposium, April 25, 2014. Colorless in grain mount and in thin section under ppl, gray to black under crossed polars, no pleochroism. Ed., 1996, Ramon DeMark and Jessie Kline, New Mexico Mineral Symposium, November 2000, NMBMMR New Mexico Mineral symposium (2000) p.11, Alkaline Rocks and Carbonatites of the World, Part 1, North and South America,- Woolley,A,R,-1987, Grossman,Jeffrey N., 1999 , Geochemistry of igneous rocks in the U.S ( major elements) from the PLUTO database, Douglas W.Rankin (1967) Guide to the Geology of the Mt.Rogers Area,Virginia,North Carolina,and Tennessee.Carolina Geological Society,Oct.14-15,1967, EL-Shazley,A.K.,Loehn C.,and Tracy R.J.,(2011) P-T-t evolution of granulite facies metamorphism and partial melting in the Winding Stair Gap,Central Blue Ridge,North Carolina,USA: Journal of Metamorphic Geology, Alkaline Rocks and Carbonatites of the World Part 1, North and South America-Wolley,A,R,-1987, U.S Geological Survey,2005,Mineral Resources Data System,U.S Geological Survey,Reston,Virginia, USGS Mineral Resources On - Line Spatial Data ,2005. : as prismatic crystals, to 20 cm surface damage effect too, but not so strongly `` incomplete ''... 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