Adelite Mineral Data
General Adelite Information
Chemical Formula:
CaMg(AsO4)(OH)
Composition:
Molecular Weight = 220.31 gm
Calcium 18.19 % Ca 25.45 % CaO
Magnesium 11.03 % Mg 18.29 % MgO
Arsenic 34.01 % As 52.16 % As2 O5
Hydrogen 0.46 % H 4.09 % H2 O
Oxygen 36.31 % O
______ ______
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, V�rmland, Filipstad, L�ngban mn Link to MinDat.org Location Data.
Name Origin:
From the Greek for indistinct, for its occurrence as massive.
Name Pronunciation:
Adelite
Adelite Image
Images:
Adelite
Comments: Yellowish glassy grains of adelite to 1mm in matrix.
Location: Langban, Filipstad, Varmland, Sweden.
Scale: Sample Size 6 x 6.5 x 4.5 cm.
© Tom Loomis / Dakota Matrix
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 - Disphenoidal H-M Symbol (2 2 2) Space Group: P 21 21 21
X Ray Diffraction:
By Intensity(I/Io ): 3.16(1), 2.59(0.7), 4.13(0.7),
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/electronU=PEAdelite x r Electron 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
(41.05) where (A B)2 (XO4) Zq
(41.05.01) Adelite Group
41.05.01.01 Adelite CaMg(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.02 Conichalcite CaCu(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.03 Austinite CaZn(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.04 Duftite-beta ? PbCu(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.05 Gabrielsonite PbFe(AsO4)(OH) P 21 m mm2
41.05.01.06 Tangeite CaCu(VO4)(OH) P 21 21 21 2 2 2
41.05.01.07 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.08 Cobaltaustinite CaCo(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.09 Arsendescloizite PbZn(AsO4)(OH) P 21 21 21 2 2 2
41.05.01.10 Gottlobite ! CaMg(VO4,AsO4)(OH) P 21 21 21 2 2 2
Strunz Class:
08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES
08.B - Phosphates, etc. with Additional Anions, without H2O
08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
08.BH.35 Austinite CaZn(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Adelite CaMg(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Arsendescloizite PbZn(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Duftite-alpha PbCu(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Duftite-beta ? PbCu(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Cobaltaustinite CaCo(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Conichalcite CaCu(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Gabrielsonite PbFe(AsO4)(OH) P 21 m mm2
08.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 21 21 21 2 2 2
08.BH.35 Tangeite CaCu(VO4)(OH) P 21 21 21 2 2 2
08.BH.35 Gottlobite ! CaMg(VO4,AsO4)(OH) P 21 21 21 2 2 2
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
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Adelite
CaMg(AsO4)(OH)
Dana No: 41.05.01.01 Strunz No: 08.BH.35
Locality:
Notes:
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