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Alarsite Mineral Data + |
General Alarsite Information |
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| AlAsO4 | |||
| Molecular Weight = 165.90 gm | |||
| Aluminum 16.26 % Al 30.73 % Al2O3 | |||
| Arsenic 45.16 % As 69.27 % As2O5 | |||
| Oxygen 38.58 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Al(AsO4) | |||
| A product of fumarolic exhalations. | |||
| Approved IMA 1994 (Dana # Added) | |||
| The Tolbachik Main fracture eruption, Kamchatka, Russia. Link to MinDat.org Location Data. | |||
| Named from its chemical composition of Aluminum and Arsenic. | |||
| ICSD 33254 | |||
| IMA1993-003 | |||
| PDF 31-2 | |||
Search for Alarsite Images | |||
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Alarsite Crystallography |
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| a:c = 1:2.23136 | |||
| a = 5.031, c = 11.226, Z = 3; V = 246.07 Den(Calc)= 3.36 | |||
| Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 3121,P 3221 | |||
| By Intensity(I/Io): 3.442(1), 4.06(0.31), 4.36(0.2), | |||
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Physical Properties of Alarsite |
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| None | |||
| Colorless, Yellowish, Pale green, Bluish. | |||
| 3.32 - 3.35, Average = 3.33 | |||
| Transparent | |||
| Brittle - Generally displayed by glasses and most non-metallic minerals. | |||
| Anhedral Grains - Granular minerals without the expression of crystal shapes | |||
| Encrustations - Forms crust-like aggregates on matrix. | |||
| 3 - Calcite | |||
| Non-fluorescent. | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Alarsite |
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| colorless. | |||
| colorless. | |||
| CI meas= -0.027 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1792,KPDmeas= 0.1805,KC= 0.1758 |
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| Uniaxial (+), w=1.596, e=1.608, bire=0.0120. | |||
Calculated Properties of Alarsite |
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relectron=3.16 gm/cc |
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| Fermion Index = 0.00018 Boson Index = 0.99982 |
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PEAlarsite = 31.58 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Alarsite is Not Radioactive |
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Alarsite Classification |
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| 38.4.2.2 (38)Anhydrous Phosphates, etc | |||
| (38.4)A+ XO4 | |||
| (38.4.2)Dana Group | |||
| VII/A.01-12 VII - Phosphates, Arsenates and Vanadates | |||
| VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of small size: Li, Be, Al | |||
| VII/A.01 - Berlinite - Beryllonite - Hurlbutite series | |||
Other Alarsite Information |
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| NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1328,1995) OPTIC PROP.(MinRec) | |||
| Links to other databases for Alarsite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas Search for Alarsite using: Visit our Advertisers for Alarsite : Translate Alarsite Mineral Data : Ask about Alarsite here : Print or Cut-and-Paste your Alarsite Specimen Label here :
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