|
| Home | Crystal | jmol | jPOWD | Chem | X Ray | Dana | Strunz | Properties | A to Z | Images | Share | News | Help | About |
General Adamite Information |
|||
 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) | ||
| IMA Status: |
Valid Species (Pre-IMA) 1866 | ||
| Locality: |
Chile, Atacama, Chañarcillo Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after the French mineralogist Gilbert Joseph Adam (1795-1881). | ||
| Name Pronunciation: |
Adamite  |
||
| Synonym: |
Cuproadamite - Cu-bearing adamite | ||
| ICSD 34868 | |||
| PDF 39-1354 | |||
Adamite Image | |||
|
Images:
|
|
||
|
Images:
|
|
||
Adamite Crystallography |
|||
| Axial Ratios: |
a:b:c =0.9744:1:0.7089 | ||
| Cell Dimensions: |
a = 8.306, b = 8.524, c = 6.043, Z = 4; V = 427.85 Den(Calc)= 4.45 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnnm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.45(1), 2.97(0.9), 4.9(0.9), | ||
| Forms:
Mouse |
|
||
|
Crystal Structure:
Mouse |
| ||
Physical Properties of Adamite |
|||
| Cleavage: |
{101} Good, {010} Poor | ||
| Color: |
Yellow, Green, Violet, Pink, Yellowish green. | ||
| Density: |
4.3 - 4.5, Average = 4.4 | ||
| Diaphaneity: |
Subtransparent | ||
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
| Habit: |
Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Hardness: |
3.5 - Copper Penny | ||
| Luminescence: |
Fluorescent and phosphorescent, Short UV=yellow green, Long UV=yellow green. | ||
| Luster: |
Vitreous - Resinous | ||
| Streak: |
white | ||
Optical Properties of Adamite |
|||
| Gladstone-Dale: |
CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1667,KPDmeas= 0.1686,KC= 0.1653 Ncalc = 1.71 - 1.74 |
||
| Optical Data: |
Biaxial (+/-), a=1.708-1.722, b=1.742-1.744, g=1.763-1.773, bire=0.0510-0.0550, 2V(Calc)=74-84, 2V(Meas)=88. Dispersion none. | ||
Calculated Properties of Adamite |
|||
| Electron Density: |
Bulk Density (Electron Density)=4.16 gm/cc note: Specific Gravity of Adamite =4.45 gm/cc. |
||
| Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
||
| Photoelectric: |
PEAdamite = 41.42 barns/electron U=PEAdamite x rElectron Density= 172.31 barns/cc. |
||
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Adamite is Not Radioactive |
||
Adamite Classification |
|||
| Dana Class: |
41.06.06.03 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | ||
| (41.06)where (A)2 (XO4) Zq | |||
| (41.06.06)Olivenite Group | |||
| Strunz Class: |
08.BB.30 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 Adamite Information |
|||
| References: |
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Sinkankas66) | ||
| See Also: |
Links to other databases for Adamite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - GeoScienceWorld 7 - Glendale Community College 8 - Google Images 9 - Google Scholar 10 - Handbook of Mineralogy (MinSocAm) 11 - Handbook of Mineralogy (UofA) 12 - HyperPhysics 13 - MinDAT 14 - Mineral and Gemstone Kingdom 15 - Mineralienatlas (Deutsch) 16 - Online Mineral Museum 17 - QUT Mineral Atlas 18 - Ruff.Info 19 - WWW-MINCRYST Search for Adamite using: Visit our Advertisers for Adamite : A Bijoux Google Search for AdamiteAdam's Minerals Google Search for Adamite Cape Minerals Google Search for Adamite Dakota Matrix Minerals Google Search for Adamite Excalibur Mineral Corp. Google Search for Adamite Exceptional Minerals Google Search for Adamite John Betts Fine Minerals Search for Adamite McDougall Minerals Google Search for Adamite Mineral News Website Link Rock and Mineral Shows Google Search for Adamite Weinrich Minerals, Inc. Google Search for Adamite Ask about Adamite here : Print or Cut-and-Paste your Adamite Specimen Label here :
|
||
