General Elyite Information Chemical Formula: |
Pb4Cu(SO4)O2(OH)4•(H2O) |
Composition: |
Molecular Weight = 1,106.45 gm |
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Copper 5.74 % Cu 7.19 % CuO |
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Hydrogen 0.55 % H 4.88 % H2O |
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Lead 74.91 % Pb 80.69 % PbO |
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Sulfur 2.90 % S 7.24 % SO3 |
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Oxygen 15.91 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Pb4Cu(SO4)O2(OH)4•(H2O) |
Environment: |
In vugs in oxidizing Pb-Cu-Zn sulfide ores. Common as a smelter product in slags. |
IMA Status: |
Approved IMA 1972 |
Locality: |
Silver King mine, Ward, Nevada, USA. Link to MinDat.org Location Data. |
Name Origin: |
Named for John Ely, an important figure in the early mining history of eastern Nevada. |
Name Pronunciation: |
Elyite |
Synonym: |
ICSD 89798 |
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PDF 50-1613 |
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Images:
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Elyite Crystallography Axial Ratios: |
a:b:c =1.2342:1:1.2669 |
Cell Dimensions: |
a = 14.233, b = 11.532, c = 14.611, Z = 8; beta = 100.45° V = 2,358.40 Den(Calc)= 6.23 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c |
X Ray Diffraction: |
By Intensity(I/Io): 6.999(1), 7.189(0.99), 2.995(0.73), |
Crystal Structure:
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Mouse
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| Physical Properties of Elyite Cleavage: |
{100} Good |
Color: |
Violet, Lavender. |
Density: |
6 |
Diaphaneity: |
Transparent |
Fracture: |
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite). |
Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Hardness: |
2 - Gypsum |
Luster: |
Silky |
Streak: |
white |
| Optical Properties of Elyite Gladstone-Dale: |
CI meas= -0.11 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.069 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1593,KPDmeas= 0.1654,KC= 0.149 Ncalc = 1.89 - 1.93 Optical Data: |
Biaxial (-), a=1.99, b=1.993, g=1.994, bire=0.0040, 2V(Calc)=58, 2V(Meas)=66. |
| Calculated Properties of Elyite Electron Density: |
Bulk Density (Electron Density)=5.26 gm/cc |
note: Specific Gravity of Elyite =6.23 gm/cc. Fermion Index: |
Fermion Index = 0.16 |
Boson Index = 0.84 Photoelectric: |
PEElyite =1,365.28 barns/electron |
U=PEElyite x rElectron Density=7,179.99 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Elyite is Not Radioactive | Elyite Classification Dana Class: |
30.01.02.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen |
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(30.01)where (A B)m (XO4)p Zq where m:p>2:1 |
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(30.01.02)Dana Group |
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Strunz Class: |
07.DF.65 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DF -With large and medium-sized cations |
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| Other Elyite Information References: |
NAME( Dana8) PHYS. PROP.(AmMin, Vol 85, p 1816) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Elyite : |
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 Elyite using: Visit our Advertisers for Elyite : A Bijoux Google Search for ElyiteAdam's Minerals Google Search for Elyite Cape Minerals Google Search for Elyite Dakota Matrix Minerals Google Search for Elyite Excalibur Mineral Corp. Google Search for Elyite Exceptional Minerals Google Search for Elyite John Betts Fine Minerals Search for Elyite McDougall Minerals Google Search for Elyite Mineral News Website Link Rock and Mineral Shows Google Search for Elyite Weinrich Minerals, Inc. Google Search for Elyite Ask about Elyite here : Print or Cut-and-Paste your Elyite Specimen Label here :
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