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Tincalconite Mineral Data + |
General Tincalconite Information |
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| Na6[B4O5(OH)4]3·8(H2O) | |||
| Molecular Weight = 855.86 gm | |||
| Sodium 16.12 % Na 21.73 % Na2O | |||
| Boron 15.16 % B 48.81 % B2O3 | |||
| Hydrogen 3.30 % H 29.47 % H2O | |||
| Oxygen 65.43 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Na6B12O15(OH)12·8(H2O) | |||
| Dehydration of borax or other Na borates. | |||
| Valid Species (Pre-IMA) 1878 | |||
| Searles Lake, San Bernardino Co., California. Link to MinDat.org Location Data. | |||
| Named for tincal (borax) and konos "powder" in allusion to the minerals composition and appearance. | |||
| ICSD 66529 | |||
| PDF 7-277 | |||
Tincalconite Image | |||
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Tincalconite Crystallography |
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| a:c = 1:1.90364 | |||
| a = 11.1402, c = 21.207, Z = 3; V = 2,279.27 Den(Calc)= 1.87 | |||
| Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: R 32 | |||
| By Intensity(I/Io): 2.92(1), 4.38(0.9), 3.44(0.55), | |||
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Mouse |
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Physical Properties of Tincalconite |
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| White. | |||
| 1.88 | |||
| Opaque | |||
| Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye. | |||
| 2 - Gypsum | |||
| Non-fluorescent. | |||
| Earthy (Dull) | |||
| Nonmagnetic | |||
| white | |||
Optical Properties of Tincalconite |
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| none. | |||
| CI meas= -0.004 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2487,KPDmeas= 0.2473,KC= 0.2464 |
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| Uniaxial (+), w=1.46, e=1.47, bire=0.0100. | |||
Calculated Properties of Tincalconite |
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relectron=1.91 gm/cc |
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| Fermion Index = 0.03048 Boson Index = 0.96952 |
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PETincalconite = 0.51 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tincalconite is Not Radioactive |
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Tincalconite Classification |
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| 26.4.2.1 (26)Hydrated Borates Containing Hydroxyl or Halogen | |||
| (26.4)Dana Type | |||
| (26.4.2)Dana Group | |||
| V/H.10-20 V - Nitrates, Carbonates and Borates | |||
| V/H - Group borates. Planary and tetrahedral groups [B3O5]1- to [B6O10]2- | |||
| V/H.10 - Diomignite - Borax series | |||
Other Tincalconite Information |
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| NAME( MinRec) PHYS. PROP.(AmMin Vol 87, p 350) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Tincalconite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - Glendale Community College 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - MinMax(Deutsch) 13 - MinMax(English) 14 - Mineralienatlas (Deutsch) 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - WWW-MINCRYST Search for Tincalconite using: Visit our Advertisers for Tincalconite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Tincalconite Mineral Data : Ask about Tincalconite here : Print or Cut-and-Paste your Tincalconite Specimen Label here :
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