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Goldichite Mineral Data |
General Goldichite Information |
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KFe+++(SO4)2•4(H2O) | ||
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Molecular Weight = 359.13 gm | ||
Potassium 10.89 % K 13.11 % K2O | |||
Iron 15.55 % Fe 22.23 % Fe2O3 | |||
Hydrogen 2.25 % H 20.07 % H2O | |||
Sulfur 17.86 % S 44.59 % SO3 | |||
Oxygen 53.46 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
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KFe3+(SO4)2•4(H2O) | ||
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Cementing fragments in slope debris from an oxidizing pyritiferous Colorado Plateau-type uranium deposit. | ||
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Valid Species (Pre-IMA) 1955 | ||
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Dexter No. 7 mine, Calf Mesa, San Rafael district, Emery Co., Utah. Link to MinDat.org Location Data. | ||
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Named for Samuel Stephen Goldich (1909-2000), American mineralogist, petrologist, and analytical isotope chemist, Professor of Geology, University of Minnesota, Minneapolis, Minneso ta, USA | ||
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Goldichite + Pronunciation ![]() |
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ICSD 22053 | ||
PDF 11-428 | |||
Goldichite Image | |||
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Goldichite Crystallography |
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a:b:c =0.9924:1:0.8689 | ||
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a = 10.45, b = 10.53, c = 9.15, Z = 4; beta = 101.817° V = 985.51 Den(Calc)= 2.42 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c | ||
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By Intensity(I/Io): 3.068(1), 7.35(0.9), 10.29(0.8), | ||
Physical Properties of Goldichite |
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{100} Perfect | ||
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Light yellow green. | ||
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2.43 | ||
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2.5 - Finger Nail | ||
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white | ||
Optical Properties of Goldichite |
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CI meas= -0.024 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2497,KPDmeas= 0.2487,KC= 0.2429 Ncalc = 1.59 |
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Biaxial (+), a=1.582, b=1.602, g=1.629, bire=0.0470, 2V(Calc)=84, 2V(Meas)=82. | ||
Calculated Properties of Goldichite |
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Bulk Density (Electron Density)=2.45 gm/cc note: Specific Gravity of Goldichite =2.43 gm/cc. |
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Fermion Index = 0.0049090482 Boson Index = 0.9950909518 |
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PEGoldichite = 6.70 barns/electron U=PEGoldichite x relectron= 16.42 barns/cc. |
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GRapi = 158.35 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Goldichite |
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Goldichite Classification |
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29.05.02.01 (29)Hydrated Acid and Sulfates | ||
(29.05)where A B (XO4)2 � x(H2O) | |||
(29.05.02)Dana Group | |||
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07.CC.40 07 - SULFATES (SELENATES, TELLURATES) | ||
07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O | |||
07.CC -With medium-sized and large cations | |||
Other Goldichite Information |
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NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
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Links to other databases for Goldichite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Goldichite using: Visit our Advertisers for Goldichite : Ask about Goldichite here : Print or Cut-and-Paste your Goldichite Specimen Label here :
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