General Guildite Information![]() CuFe+++(SO4)2(OH)•4(H2O) |
![]() Molecular Weight = 400.59 gm |
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Iron 13.94 % Fe 19.93 % Fe2O3 |
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Copper 15.86 % Cu 17.86 % Cu2O |
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Hydrogen 2.26 % H 20.24 % H2O |
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Sulfur 16.01 % S 39.97 % SO3 |
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Oxygen 51.92 % O |
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100.00 % 98.00 % = TOTAL OXIDE |
![]() CuFe3+(SO4)2(OH)•4(H2O) |
![]() Secondary mineral formed in mine workings by burning pyritic ores. |
![]() Valid Species (Pre-IMA) 1928 |
![]() United Verde mine, Jerome, Yavapai Co., Arizona, USA. Link to MinDat.org Location Data. |
![]() Named for Frank Nelson Guild (1870-1939), American mineralogist and economic geologist, University of Arizona, Tucson, Arizona, USA. |
![]() Guildite |
![]() ![]() ICSD 100630 |
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PDF 23-217 |
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Guildite Crystallography![]() a:b:c =1.3717:1:1.018 |
![]() a = 9.786, b = 7.134, c = 7.263, Z = 2; beta = 105.28° V = 489.13 Den(Calc)= 2.72 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m |
![]() By Intensity(I/Io): 3.144(1), 9.46(0.35), 4.998(0.27), |
| Physical Properties of Guildite![]() {???} Perfect |
![]() Brown, Honey yellow, Dark brown. |
![]() 2.73 |
![]() Transparent to Translucent |
![]() Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
![]() 2.5 - Finger Nail |
![]() Non-fluorescent. |
![]() Vitreous (Glassy) |
![]() light yellow |
| Optical Properties of Guildite![]() CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.237,KPDmeas= 0.2361,KC= 0.2441 Ncalc = 1.66 - 1.67 ![]() Biaxial (+), a=1.622-1.623, b=1.628-1.63, g=1.681-1.684, bire=0.0590-0.0610 |
| Calculated Properties of Guildite![]() Bulk Density (Electron Density)=2.72 gm/cc |
note: Specific Gravity of Guildite =2.72 gm/cc. ![]() Fermion Index = 0.0044088701 |
Boson Index = 0.9955911299 ![]() PEGuildite = 11.80 barns/electron |
U=PEGuildite x rElectron Density= 32.04 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Guildite is Not Radioactive | Guildite Classification![]() 31.09.07.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen |
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(31.09)where (A+ B++) (XO4) Zq·x(H2O) |
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(31.09.07)Dana Group |
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![]() 07.DC.30 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DC -With only medium-sized cations; chains of corner-sharing octahedra |
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| Other Guildite Information![]() NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Guildite : |
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 Guildite using: Visit our Advertisers for Guildite : A Bijoux Google Search for GuilditeAdam's Minerals Google Search for Guildite Cape Minerals Google Search for Guildite Dakota Matrix Minerals Google Search for Guildite Excalibur Mineral Corp. Google Search for Guildite Exceptional Minerals Google Search for Guildite John Betts Fine Minerals Search for Guildite McDougall Minerals Google Search for Guildite Mineral News Website Link Rock and Mineral Shows Google Search for Guildite Weinrich Minerals, Inc. Google Search for Guildite Ask about Guildite here : Print or Cut-and-Paste your Guildite Specimen Label here :
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