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Wermlandite Mineral Data + |
General Wermlandite Information |
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| (Ca,Mg)Mg7(Al,Fe+++)2(SO4)2(OH)18·12(H2O) | |||
| Molecular Weight = 989.11 gm | |||
| Calcium 3.04 % Ca 4.25 % CaO | |||
| Magnesium 17.82 % Mg 29.54 % MgO | |||
| Aluminum 4.09 % Al 7.73 % Al2O3 | |||
| Iron 2.82 % Fe 4.04 % Fe2O3 | |||
| Hydrogen 4.28 % H 38.25 % H2O | |||
| Sulfur 6.48 % S 16.19 % SO3 | |||
| Oxygen 61.47 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Ca0.75Mg7.25Al1.5Fe3+0.5(SO4)2(OH)18·12(H2O) | |||
| Associated with calcite and magnetite. | |||
| Approved IMA 1971 | |||
| Långban mine, Bergslagen ore district, Filipstad, Värmland (Wermland), Sweden. Link to MinDat.org Location Data. | |||
| Named after the locality. | |||
| ICSD 30887 | |||
| PDF 25-153 | |||
Wermlandite Image | |||
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Wermlandite Crystallography |
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| a:c = 1:2.42609 | |||
| a = 9.303, c = 22.57, Z = 2; V = 1,691.64 Den(Calc)= 1.94 | |||
| Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3c1 | |||
| By Intensity(I/Io): 7.98(1), 11.16(0.7), 4.63(0.5), | |||
Physical Properties of Wermlandite |
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| [0001] Perfect | |||
| Bluish, Greenish gray. | |||
| 1.932 | |||
| Micaceous - Fracture of flexable micaceous cleavage fragments. | |||
| Hexagonal - Six-sided crystal shape in cross-section or habit. | |||
| Platy - Sheet forms (e.g. micas). | |||
| Thin - Flat dimensioned crystals. | |||
| 1.5 - Between Talc and Gypsum | |||
Optical Properties of Wermlandite |
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| CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2513,KPDmeas= 0.2523,KC= 0.2554 |
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| Uniaxial (-), e=1.482, w=1.493, bire=0.0110. | |||
Calculated Properties of Wermlandite |
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relectron=2.00 gm/cc |
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| Fermion Index = 0.01924 Boson Index = 0.98076 |
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PEWermlandite = 2.17 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Wermlandite is Not Radioactive |
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Wermlandite Classification |
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| 31.3.2.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen | |||
| (31.3)where (A+ B++)5 (XO4) Zq·x(H2O) | |||
| (31.3.2)Dana Group | |||
| VI/D.14-25 VI - Sulfates,Chromates,Molybdates and Tungstates | |||
| VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium and very big size | |||
| VI/D.14 - Metavoltine - Slavikite series | |||
Other Wermlandite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Wermlandite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - Scandinavian mineral gallery 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Wermlandite using: Visit our Advertisers for Wermlandite : Translate Wermlandite Mineral Data : Ask about Wermlandite here : Print or Cut-and-Paste your Wermlandite Specimen Label here :
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