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General Paradamite Information |
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 Chemical Formula: |
Zn2(AsO4)(OH) | ||
| Composition: |
Molecular Weight = 286.71 gm | ||
| Zinc 45.61 % Zn 56.78 % ZnO | |||
| Arsenic 26.13 % As 40.08 % As2O5 | |||
| Hydrogen 0.35 % H 3.14 % H2O | |||
| Oxygen 27.90 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Zn2(AsO4)(OH) | ||
| Environment: |
Secondary mineral in the oxidized sone of a Ag-Pb-Zn mine. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1956 | ||
| Locality: |
Ojuela mine, Mapimi, Durango, Mexico Link to MinDat.org Location Data. | ||
| Name Origin: |
Named as the dimorph of adamite. | ||
| Name Pronunciation: |
Paradamite + Pronunciation  |
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Paradamite Image | |||
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Images:
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Paradamite Crystallography |
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| Axial Ratios: |
a:b:c =0.8687:1:0.8416 | ||
| Cell Dimensions: |
a = 5.83, b = 6.711, c = 5.648, Z = 2; alpha = 104.73°, beta = 92.26°, gamma = 76.81° V = 207.92 Den(Calc)= 4.58 | ||
| Crystal System: |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.698(1), 2.838(0.99), 2.994(0.96), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Paradamite |
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| Cleavage: |
{010} Perfect | ||
| Color: |
Light yellow. | ||
| Density: |
4.55 | ||
| Diaphaneity: |
Transparent | ||
| Hardness: |
3.5 - Copper Penny | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Paradamite |
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| Gladstone-Dale: |
CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1657,KPDmeas= 0.1668,KC= 0.1653 Ncalc = 1.75 - 1.76 |
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| Optical Data: |
Biaxial (-), a=1.726, b=1.771, g=1.78, bire=0.0540, 2V(Calc)=46, 2V(Meas)=50. | ||
Calculated Properties of Paradamite |
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| Electron Density: |
Bulk Density (Electron Density)=4.28 gm/cc note: Specific Gravity of Paradamite =4.58 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
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| Photoelectric: |
PEParadamite = 41.42 barns/electron U=PEParadamite x rElectron Density= 177.34 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Paradamite is Not Radioactive |
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Paradamite Classification |
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| Dana Class: |
41.06.07.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | ||
| (41.06)where (A)2 (XO4) Zq | |||
| (41.06.07)Tarbuttite Group | |||
| Strunz Class: |
08.BB.35 08 - PHOSPHATES, ARSENATES, VANADATES | ||
| 08.B - Phosphates, etc. with Additional Anions, without H2O | |||
| 08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1 | |||
Other Paradamite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Paradamite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineral and Gemstone Kingdom 13 - Mineralienatlas (Deutsch) 14 - Online Mineral Museum 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - WWW-MINCRYST Search for Paradamite using: Visit our Advertisers for Paradamite : A Bijoux Google Search for ParadamiteAdam's Minerals Google Search for Paradamite Cape Minerals Google Search for Paradamite Dakota Matrix Minerals Google Search for Paradamite Excalibur Mineral Corp. Google Search for Paradamite Exceptional Minerals Google Search for Paradamite John Betts Fine Minerals Search for Paradamite McDougall Minerals Google Search for Paradamite Mineral News Website Link Rock and Mineral Shows Google Search for Paradamite Weinrich Minerals, Inc. Google Search for Paradamite Ask about Paradamite here : Print or Cut-and-Paste your Paradamite Specimen Label here :
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