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Bechererite Mineral Data + |
General Bechererite Information |
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| (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 | |||
| Molecular Weight = 933.60 gm | |||
| Zinc 45.53 % Zn 56.67 % ZnO | |||
| Copper 10.21 % Cu 12.78 % CuO | |||
| Silicon 1.50 % Si 3.22 % SiO2 | |||
| Hydrogen 1.62 % H 14.47 % H2O | |||
| Sulfur 5.15 % S 10.29 % SO2 | |||
| Oxygen 35.99 % O | |||
| ______ ______ | |||
| 100.00 % 97.43 % = TOTAL OXIDE | |||
| Zn4.5Cu1.5Zn2(OH)132(S0.75)2(Si0.25)2(O3)2(OH) | |||
| Alteration product of copper and zinc orebodies. | |||
| Approved IMA 1994 (Dana # Added) | |||
| The dump of the Tonopah-Belmont mine, Osborne silver-gold district, Maricopa County, Arizona USA. Link to MinDat.org Location Data. | |||
| Named after Dr. Karl Becherer (1926-) of the University of Vienna, in recognition of his contributions to the mineralogy of Spangolite from Lavrion. | |||
| ICSD 81354 | |||
| IMA1994-005 | |||
| PDF 46-1438 | |||
Search for Bechererite Images | |||
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Bechererite Crystallography |
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| a:c = 1:0.88632 | |||
| a = 8.322, c = 7.376, Z = 1; V = 442.39 Den(Calc)= 3.50 | |||
| Trigonal - PyramidalH-M Symbol (3) Space Group: P 3 | |||
| By Intensity(I/Io): 7.37(1), 2.556(0.5), 3.282(0.3), | |||
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Physical Properties of Bechererite |
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| [001] Perfect | |||
| Light green. | |||
| 3.45 - 3.49, Average = 3.47 | |||
| Transparent | |||
| Brittle - Generally displayed by glasses and most non-metallic minerals. | |||
| Acicular - Occurs as needle-like crystals. | |||
| Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. | |||
| Spherical - Spherical, rounded aggregates. | |||
| 2.5-3 - Finger Nail-Calcite | |||
| Non-fluorescent. | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Bechererite |
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| colorless. | |||
| colorless. | |||
| CI meas= 0.023 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.188,KPDmeas= 0.1896,KC= 0.1941 |
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| Uniaxial (-), e=1.611, w=1.705, bire=0.0940. | |||
Calculated Properties of Bechererite |
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relectron=3.36 gm/cc |
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| Fermion Index = 0.01992 Boson Index = 0.98008 |
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PEBechererite = 27.31 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bechererite is Not Radioactive |
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Bechererite Classification |
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| 31.1.6.2 (31)Hydrated Sulfates Containing Hydroxyl or Halogen | |||
| (31.1)where (A+ B++)m (XO4)p Zq·x(H2O), where m:p>6:1 | |||
| (31.1.6)Dana Group | |||
| VI/D.08-05 VI - Sulfates,Chromates,Molybdates and Tungstates | |||
| VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size | |||
| VI/D.08 - Spangolite - Glaucocerinite series | |||
Other Bechererite Information |
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| NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(MinRec) | |||
| Links to other databases for Bechererite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST Search for Bechererite using: Visit our Advertisers for Bechererite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks 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 Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Bechererite Mineral Data : Ask about Bechererite here : Print or Cut-and-Paste your Bechererite Specimen Label here :
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