General Adelite Information Chemical Formula: |
CaMg(AsO4)(OH) |
Composition: |
Molecular Weight = 220.31 gm |
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Calcium 18.19 % Ca 25.45 % CaO |
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Magnesium 11.03 % Mg 18.29 % MgO |
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Arsenic 34.01 % As 52.16 % As2O5 |
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Hydrogen 0.46 % H 4.09 % H2O |
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Oxygen 36.31 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
CaMg(AsO4)(OH) |
Environment: |
In manganese deposits at Langban. |
IMA Status: |
Valid Species (Pre-IMA) 1804 |
Locality: |
Sweden, Värmland, Filipstad, Långban mn Link to MinDat.org Location Data. |
Name Origin: |
From the Greek for indistinct, for its occurrence as massive. |
Name Pronunciation: |
Adelite |
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Images:
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Adelite Crystallography Axial Ratios: |
a:b:c =0.8502:1:0.661 |
Cell Dimensions: |
a = 7.525, b = 8.85, c = 5.85, Z = 4; V = 389.59 Den(Calc)= 3.76 |
Crystal System: |
Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 212121 |
X Ray Diffraction: |
By Intensity(I/Io): 3.16(1), 2.59(0.7), 4.13(0.7), |
Crystal Structure:
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Mouse
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| Physical Properties of Adelite Cleavage: |
{???} Indistinct |
Color: |
Blue gray, Green, Gray, Yellow, Light green. |
Density: |
3.73 - 3.79, Average = 3.76 |
Diaphaneity: |
Transparent |
Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
Hardness: |
5 - Apatite |
Luminescence: |
Non-fluorescent. |
Luster: |
Resinous |
Streak: |
white |
| Optical Properties of Adelite Gladstone-Dale: |
CI meas= -0.018 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.018 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1918,KPDmeas= 0.1918,KC= 0.1884 Ncalc = 1.7 - 1.71 Optical Data: |
Biaxial (+), a=1.712, b=1.721, g=1.731, bire=0.0190 |
| Calculated Properties of Adelite Electron Density: |
Bulk Density (Electron Density)=3.62 gm/cc |
note: Specific Gravity of Adelite =3.76 gm/cc. Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEAdelite = 25.46 barns/electron |
U=PEAdelite x rElectron Density= 92.10 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Adelite is Not Radioactive | Adelite Classification Dana Class: |
41.05.01.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.05)where (A B)2 (XO4) Zq |
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(41.05.01)Adelite Group |
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Strunz Class: |
08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1 |
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| Other Adelite Information References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Adelite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info 16 - Scandinavian mineral gallery 17 - WWW-MINCRYST Search for Adelite using: Visit our Advertisers for Adelite : A Bijoux Google Search for AdeliteAdam's Minerals Google Search for Adelite Cape Minerals Google Search for Adelite Dakota Matrix Minerals Google Search for Adelite Excalibur Mineral Corp. Google Search for Adelite Exceptional Minerals Google Search for Adelite John Betts Fine Minerals Search for Adelite McDougall Minerals Google Search for Adelite Mineral News Website Link Rock and Mineral Shows Google Search for Adelite Weinrich Minerals, Inc. Google Search for Adelite Ask about Adelite here : Print or Cut-and-Paste your Adelite Specimen Label here :
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