 | | Report (issue) | | NaMg3Al6Si6O18(BO3)3(OH)3F Fluor-dravite Crystal Data: Hexagonal. Point Group: 3m. As irregular grains...Pattern: Crabtree emerald mine, Mitchell County, North Carolina, USA. 3.475 (100), 2.583 (67), 2.961...100.00 (1) Crabtree emerald mine, Mitchell County, North Carolina, USA; average of 10 electron microprobe...Crabtree emerald mine, Mitchell County, North Carolina, USA. Name: As a dravite with dominant fluorine...National Museum of Natural History, Washington, D.C., USA (121341). References: (1) Clark, C.M., F.C. Hawthorne |  | Clark, C. M., Hawthorne, F. C., Ottolini, L. (2011) Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral species of the tourmaline group from the Crabtree emerald mine, Mitchell County, North Carolina: description and crystal structure. The Canadian Mineralogist, 49 (1) 57-62 doi:10.3749/canmin.49.1.57 | Journal (article/letter/editorial) | | 57-62 (2011) DOI : 10.3749/canmin.49.1.57 FLUOR-DRAVITE, NaMg3Al6Si6O18(BO3)3(OH)3F, A NEW MINERAL SPECIES...GROUP FROM THE CRABTREE EMERALD MINE, MITCHELL COUNTY, NORTH CAROLINA: DESCRIPTION AND CRYSTAL STRUCTURE...Ferrata 1, I–27100 Pavia, Italy Abstract Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, is a new mineral species...group from the Crabtree emerald mine, Mitchell County, North Carolina, U.S.A. It occurs as isolated anhedral...blackish brown with a pale brown streak. Fluor-dravite is brittle and has a Mohs hardness of 7; it is |  | | Journal (article/letter/editorial) | | new species, fluor-dravite, NaMg,A1 6Si 60,8(B0 3h(OHhF, is the F-analogue of dravite [NaMg,A1 6Si 60'8(B0...type locality is the Crabtree emerald mine, North Carolina, USA, where it occurs at the boundary of a small...country-rock. The original description of fluor-dravite was published by Clark et al. (2011). Literature...data for a sectorally zoned triclinic Ni-bearing dravite from the Berezovskoe gold deposit, Russia. All...number of minerals, as well as fluorite and brown "dravite" tourmalines in matrix or in calcite voids (Tomas |  | | Journal (article/letter/editorial) | | byzantievite, chibaite, ferroericssonite, fluor-dravite, fluorocronite, litochlebite, magnesioneptunite...triple junction of the Pacific, Philippine Sea, and North America plates. The chemical analysis of chibaite...Fe2+ analogue of ericssonite, from eastern Fresno County, California, U.S.A. Canadian Mineralogist, 49,...Creek in eastern Fresno County, and also at Trumbull Peak in Mariposa County, California, U.S.A. The...collection of the Natural History Museum of Los Angeles County under catalog numbers: 63206 (Esquire 7) and 63207 |  | | Journal (article/letter/editorial) | | Mineralogist, Volume 98, pages 1442–1448, 2013 Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, a new mineral...50007, SE-10405 Stockholm, Sweden 2 Abstract Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, is a new...occurs in quartz-muscovite schist. Crystals of oxy-dravite are dark red, partially translucent with a vitreous...of 3.073 g/cm3. In plane-polarized light, oxy-dravite is pleochroic (O = orange and E = pink) and uniaxial...uniaxial negative: ω = 1.650(5), ε = 1.620(5). Oxy-dravite is rhombohedral, space group R3m, with the unit-cell |  | | Report (issue) | | NORTH CAROLINA DEPARTMENT OF CONSERVATION WILLIAM DIVISION JASPER P. OF L. SAUNDERS, MINERAL...RESOURCES GEOLOGIST Circular 16 LOCALITIES NORTH OF CAROLINA BY JAMES F. CONLEY Doc NC DENR LIBRARY...... ACKNOWLEDGEMENTS MINERAL COLLECTING IN NORTH CAROLINA , . . . . # . WHERE TO COLLECT f ... f ......THE MINERAL LOCALITIES OF NORTH CAROLINA BY COUNTIES . . ALAMANCE COUNTY 5 5 Pyrophyllite ......... f .......... 5 ALEXANDER COUNTY ................. 7 Emerald, Hiddenite and Associated Minerals |  | | Journal (article/letter/editorial) | | State University, Baton Rouge, Louisiana 70803, USA Horst R. MARSCHALL¶ Department of Earth Sciences...Oceanographic Institution, Woods Hole, Massachusetts 02543, USA. E-mail address: hmarschall@whoi.edu 2 the canadian...transitions are shown for reference. Data are for: 1) dravite: Robbins & Yoder (1962), 2) magnesio-foitite: Werding...(1984), 3) schorl: Holtz & Johannes (1991), 4) dravite: Krosse (1995), 5) Na-free Mg system: von Goerne...8) natural tourmaline: Spicer et al. (2004), 9) dravite: Ota et al. (2008). 4 the canadian mineralogist |  | Lussier, Aaron, Ball, Neil A., Hawthorne, Frank C., Henry, Darrell J., Shimizu, Rentaro, Ogasawara, Yoshihide, Ota, Tsutomu (2016) Maruyamaite, K(MgAl2)(Al5Mg)Si6O18(BO3)3(OH)3O, a potassium-dominant tourmaline from the ultrahigh-pressure Kokchetav massif, northern Kazakhstan: Description and crystal structure. American Mineralogist, 101 (2) 355-361 doi:10.2138/am-2016-5359 | Journal (article/letter/editorial) | | (Al5Mg)(BO3)3(Si6O18)(OH)3O, is related to oxy-dravite: ideally Na(MgAl2)(Al5Mg)(BO3)3(Si6O18) (OH)3O...and the rim compositions correspond to K-bearing dravite or oxydravite). Microdiamond inclusions occur only...K(MgAl2)(Al5Mg)(BO3)3(Si6O18) (OH)3O, is the K analog of oxy-dravite, ideally Na(MgAl2)(Al5Mg) (BO3)3(Si6O18)(OH)3O...and Ogasawara 2013), and both K-tourmaline and dravite are likely to be unstable at peak metamorphic conditions...Lucchesi, S. (2004) Crystal chemistry of the schorl-dravite series. European Journal of Mineralogy, 16, 335–344 |  | Watenphul, Anke, Schlüter, Jochen, Bosi, Ferdinando, Skogby, Henrik, Malcherek, Thomas, Mihailova, Boriana (2016) Influence of the octahedral cationic-site occupancies on the framework vibrations of Li-free tourmalines, with implications for estimating temperature and oxygen fugacity in host rocks. American Mineralogist, 101 (11) 2554-2563 doi:10.2138/am-2016-5820 | Journal (article/letter/editorial) | | end-members are common, including dravite– schorl, schorl–elbaite, dravite–uvite, fluor-buergerite–schorl... (Color online.) povondraite–bosiite–oxy-dravite–dravite (e.g., Donney and Barton 1972; Bloodaxe et...from Mg- and Fe-dominant species, 2555 e.g., dravite and schorl, by the shape of the OH-stretching modes...(Watenphul et al. 2016) or magnesio-foitite vs. dravite and uvite (Berryman et al. 2015). Alkali/calcic...spectra of representative tourmaline samples: dravite (S2), uvite (S39), foitite (S45), schorl (S7), |  | | Report (issue) | | .'.' .., Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie RUTILE GUMMITE...Information Circular 24 Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie Raleigh...copies of this publication may be obtained from: North CarOlina Department of Natural Resources and Community...for the general welfare of the citizens of North Carolina. The Section conducts a number of basic and...Geological Survey Section, P. O. Box 27687, Raleigh, North Carolina 27611. Eldon P. Allen, Chief Geologist FRONT | | | Report (issue) | | Information Circular 24 Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie Raleigh...copies of this publication may be obtained from: North Carolina Department of Natural Resources and Community...Geological Survey Section, P. O. Box 27687, Raleigh, North Carolina 27611. Eldon P. Allen, Chief Geologist i ...FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian Institution (slide...viable mineral collecting sites through out North Carolina. Some sites are commercially operated during |  | Andreozzi, Giovanni B., Bosi, Ferdinando, Celata, Beatrice, Capizzi, Luca S., Stagno, Vincenzo, Beckett-Brown, Christopher E. (2020) Crystal-chemical behavior of Fe2+ in tourmaline dictated by structural stability: insights from a schorl with formula NaY(Fe2+2Al)Z(Al5Fe2+)(Si6O18)(BO3)3(OH)3(OH,F) from Seagull batholith (Yukon Territory, Canada). Physics and Chemistry of Minerals, 47 (6). doi:10.1007/s00269-020-01094-7 | Journal (article/letter/editorial) | | investigated at high temperature for schorl, dravite, Fe-bearing oxy-dravite, lucchesiite and Fe-rich fluor-elbaite...partial disorder of Mg over Y and Z for dravite and fluor-dravite, as well as the failure in synthesizing...Mossbauer and structural parameters in elbaite-schorl-dravite tourmalines. Am Mineral 93:658–666 Berryman EJ...(2016a) Thermal stability of extended clusters in dravite: a combined EMP, SREF and FTIR study. Phys Chem...induced cation redistribution in Fe-bearing oxy-dravite and potential geothermometric implications. Contrib |  | Bosi, Ferdinando, Andreozzi, Giovanni B., Agrosi, Giovanna, Scandale, Eugenio (2015) Fluor-tsilaisite, NaMn3Al6(Si6O18)(BO3)3(OH)3F, a new tourmaline from San Piero in Campo (Elba, Italy) and new data on tsilaisitic tourmaline from the holotype specimen locality. Mineralogical Magazine, 79 (1) 89-101 doi:10.1180/minmag.2015.079.1.08 | Journal (article/letter/editorial) | | Oxy-chromium-dravite Oxy-dravite Oxy-schorl Oxy-vanadium-dravitea Darrellhenryite Vanadio-oxy-dravite Vanad...Vanadio-oxy-chromium-dravite Chromo-alumino-povondraite NaCr3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O NaAl3(Al4Mg2)(Si6O18)(BO3)3(OH)3O...Nishio-Hamane et al. (2013, 2014) Fluor-species Fluor-dravite Fluor-schorl Fluor-elbaite Fluor-tsilaisite N...new mineral but the redefinition of ‘‘vanadium-dravite’’. 90 FLUOR-TSILAISITE, A NEW TOURMALINE plagioclase...Mössbauer and structural parameters in elbaiteschorl-dravite tourmalines. American Mineralogist, 93, 658666 |  | | Journal (article/letter/editorial) | | Bosiite NaFe33+(Al4Mg2)Si6O18(BO3)3(OH)3O Chromium-dravite NaMg3Cr6Si6O18(BO3)3(OH)3OH Chromo-alumino-povondraite... Darrellhenryite NaLiAl2Al6Si6O18(BO3)3(OH)3O Dravite NaMg3Al6Si6O18(BO3)3(OH)3OH Elbaite Na(Li1.5,Al1...Fluor-buergerite NaFe3+ 3 Al6Si6O18(BO3)3O3F Fluor-dravite NaMg3Al6Si6O18(BO3)3(OH)3F Fluor-elbaite Na(Li1...NaAl3Al6Si6O18(BO3)3O3OH Oxy-chromium-dravite NaCr3(Cr4Mg2)Si6O18(BO3)3(OH)3O Oxy-dravite Na(Al2Mg)(Al5Mg)Si6O18(BO3)3(OH)3O...Na(Fe2+ 2 Al)Al6Si6O18(BO3)3(OH)3O Oxy-vanadium-dravite NaV3(V4Mg2)Si6O18(BO3)3(OH)3O 3+ Povondraite NaFe3 |  | Bosi, Ferdinando, Skogby, Henrik, Ciriotti, Marco E., Gadas, Petr, Novák, Milan, Cempírek, Jan, Všianský, Dalibor, Filip, Jan (2017) Lucchesiite, CaFe2+3Al6(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup. Mineralogical Magazine, 81 (1) 1-14 doi:10.1180/minmag.2016.080.067 | Journal (article/letter/editorial) | | Oxy-species Oxy-chromium-dravite Oxy-dravite Oxy-schorl Oxy-vanadium-dravitea Vanadio-oxy-dravite Vanadio-oxy-chromium-dravite...Vanadio-oxy-chromium-dravite Chromo-alumino-povondraite Darrellhenryite Maruyamaite Bosiite Lucchesiite Hydroxy-species...Hydroxy-species Tsilaisite Adachiite Fluor-species Fluor-dravite Fluor-schorl Fluor-elbaite Fluor-tsilaisite a ... Redefinition of the former mineral ‘vanadium-dravite’. 2 LUCCHESIITE, A NEW MINERAL SPECIES OF TOURMALINE...textural-paragenetic forms; interstitial Ca-rich schorl–dravite to Na-Mg-rich feruvite in an outer granitic unit |  | Ertl, Andreas, Kolitsch, Uwe, Dyar, M. Darby, Meyer, Hans-Peter, Rossman, George R., Henry, Darrell J., Prem, Markus, Ludwig, Thomas, Nasdala, Lutz, Lengauer, Christian L., Tillmanns, Ekkehart, Niedermayr, Gerhard (2016) Fluor-schorl, a new member of the tourmaline supergroup, and new data on schorl from the cotype localities. European Journal of Mineralogy, 28 (1) 163-177 doi:10.1127/ejm/2015/0027-2501 | Journal (article/letter/editorial) | | Holyoke College, South Hadley, Massachusetts 01075, USA 4 Institut für Geowissenschaften, Universität Heidelberg...of Technology, Pasadena, California 91125–2500, USA 6 Department of Geology and Geophysics, Louisiana...State University, Baton Rouge, Louisiana 70803, USA Abstract: Fluor-schorl, NaFe2+3Al6Si6O18(BO3)3(OH)3F...supergroup and crystal chemistry of the schorl–dravite series have been investigated by Bosi & Lucchesi...tourmalines as reference material: elbaite (98144), dravite (108796) and schorl (112566) (Dyar et al., 1998) |  | | Journal (article/letter/editorial) | | end-member compositions [dravite NaMg 3Al 6Si 6O 18(BO 3) 3(OH) 3OH, K-dravite KMg3Al6Si6O18(BO3)3(OH)3OH...derivatives (K0ʹ = ∂K0/∂P)T: dravite K0 = 97(6), K0ʹ = 5.0(5); K-dravite K0 = 109(4), K0ʹ = 4.3(2); oxy-uvite...Tourmaline equation of state parameters Dravite K-dravite Oxy-uvite Magnesio-foitite Olenite K0 (GPa)...1568(2) 1485(3) This study Natural tourmaline Dravite 110(3) 4.6(8) 1578.2(2) 112(1) [4] 1578.2(2) O’Bannon...Elbaite-schorl 117 a 1568 a Schorl-dravite 116 1578 a Schorl-dravite 118 1578 a Schorl 120 1553 Tatli and |  | Henry, D. J., Novak, M., Hawthorne, F. C., Ertl, A., Dutrow, B. L., Uher, P., Pezzotta, F. (2011) Nomenclature of the tourmaline-supergroup minerals. American Mineralogist, 96 (5) 895-913 doi:10.2138/am.2011.3636 | Journal (article/letter/editorial) | | reference root composition for that root name: e.g., dravite. (2) For a tourmaline composition that has most...the root name plus prefix modifiers, e.g., fluor-dravite. (3) If there are multiple prefixes, they should...the structural formula, e.g., “potassium-fluor-dravite.” Keywords: Tourmaline, mineral chemistry, nomenclature...In the case of two-site coupled substitution, dravite can be transformed to uvite by the substitution...Appendix 1 for more details). For example, the dravite end-member [NaMg3Al6(Si6O18) (BO3)3(OH)3OH] is |  | | Journal (article/letter/editorial) | | large variety of minerals and gemstones in North Carolina annually attracts thousands of collectors to...the world. Some Mineral Collecting Sites in North Carolina T H E C O L L E C T I N G L O C A L I T I E...McKenzie's publication Mineral Collecting Sites in North Carolina: Information Circular 24 (1978). For a more...locations on county road maps, refer to this publication, which can be ordered from the North Carolina Department...27687, Raleigh, North Carolina 27611. The price is $5.00 plus 4% sales tax. Individual county road maps can |  | Baksheev, Ivan A., Trumbull, Robert B., Popov, Mikhail P., Erokhin, Yuri V., Kudryavtseva, Olesya E., Yapaskurt, Vasily O., Khiller, Vera V., Vovna, Galina M., Kiselev, Vladimir I. (2018) Chemical and boron isotopic composition of tourmaline from the Mariinsky emerald deposit, Central Urals, Russia. Mineralium Deposita, 53 (4) 565-583 doi:10.1007/s00126-017-0759-z | Journal (article/letter/editorial) | | Emerald Mines locality in the Central Urals, 80 km north of Yekaterinburg (Fig. 1), has attracted many geological...Fershtater et al. 2007), which extends for 39 km north–south (Fig. 1). The Adui pluton shows irregular...along NE-trending faults and dip to the south or north at low angles. They reach 50 m in length and have...(RMs) Harvard 112566 schorl and Harvard 108796 dravite (Dyar et al. 2001). The results from single analyses...the tourmaline of types 1 correspond to dravite and fluor-dravite, except for some Cr-rich tourmaline of |  | | Report (chapter) | | experimentally shown the stability of tourmaline (dravite) at UHP conditions along with other 15 boron-bearing...exhumation during progressive rise of the Himalaya from north to the south since A 45 Ma (Jain 2014, and references...high-grade metamorphosed Puga Formation to the north (e.g. Rao & Rai 2006 and references therein). Taglang...ED the highest B content in tourmaline II and dravite. The average crystal-chemical formula of tourmaline...solid solution along magnesio-foitite and ED NH4 dravite join. The general formula of such tourmaline with |  | | Journal (article/letter/editorial) | | (Al) (NaR2+)-1 took place. Hydrothermal fluor-dravite from the metasomatized chlorite phyllite adjacent...granitic pegmatite group, metasomatized host rock, dravite, Naipa, Mozambique Introduction Tourmalines from...Li-Cs-Ta granitic pegmatite group, Mozambique, and dravite (-Mg-rich schorl) from the chlorite phyllite adjacent...phyllite adjacent to the NPG contains black fluor-dravite (-Mg-rich schorl) (MT) (Fig. 7, Table 4), a new...granitic pegmatite group, Mozambique, and fluor-dravite (-Mg-rich schorl) from chlorite phyllite adjacent |  | Pautov, L. A., Popov, M. P., Erokhin, Yu. V., Khiller, V. V., Karpenko, V. Yu. (2013) Mariinskite, BeCr2O4, a new mineral, chromium analog of chrysoberyl. Geology of Ore Deposits, 55 (8) 648-662 doi:10.1134/s1075701513080096 | Journal (article/letter/editorial) | | km north of the first mine, and in the following year the Mariinsky deposit, located 8.5 km north of...al., 2011), the individual zones correspond to dravite, fluordravite, and Cr–Al– Mg tourmaline. Eskolaite...C.M., Hawthorne, F.C., and Ottolini L., Fluor dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral of the...group from the Crabtree Emerald Mine, Mitchell County, North Carolina: description and crystal structure |  | | Journal (article/letter/editorial) | | compositions. All tourmalines are close to the dravite endmember and belong to the alkali group. The type-I...XSeries ICP-MS (Thermo Fisher Scientific, Waltham, MA, USA) fitted with a 343 nm femtosecond laser ablation...system (J-100, Applied Spectra, West Sacramento, CA, USA). Helium gas carrying the ablated sample aerosol...system (J-100, Applied Spectra, West Sacramento, CA, USA) at the National Research Center for Geoanalysis...M., Hawthorne, F.C., Ottolini, L., 2011. Fluor-dravite, NaMg3Al6Si6O18(BO3) (3)(OH)(3)F, a new mineral |  | | Book | | Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187...--and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE MYERS --and...Allgood, J. Pradenas: Gold occurrences in Tuolumne County, California 18:41-45, 18:62-64 --with W. H. Wilkinson |
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