Schlossmacherite Mineral Data

Schlossmacherite Mineral Data +

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General Schlossmacherite Information

Chemical Formula:

(H3O,Ca)Al3(AsO4,SO4)2(OH)6

Composition:

Molecular Weight = 463.69 gm

Calcium 2.16 % Ca 3.02 % CaO

Aluminum 17.46 % Al 32.98 % Al₂O₃

Arsenic 24.24 % As 37.18 % As₂O₅

Hydrogen 1.79 % H 16.03 % H₂O

Sulfur 3.46 % S 8.63 % SO₃

Oxygen 50.89 % O

______ ______

100.00 % 97.84 % = TOTAL OXIDE

Empirical Formula:

(H₃O)_0.75Ca_0.25Al₃(AsO₄)_1.5(SO₄)_0.5(OH)₆

IMA Status:

Approved IMA 1980

Locality:

Emma Luisa mine, Guanaco, Chile. Link to MinDat.org Location Data.

Name Origin:

Named for Karl Schlossmacher (1887-?), mineralogist and honorary member of the German Gemological Society.

Schlossmacherite Image

Images:

Schlossmacherite

Comments: Small (up to 3 mm) clusters of pale yellow green Schlossmacherite crystals on a siliceous matrix.
Location: Guanaco, Chile. Scale: Picture size 5 mm.
© John Veevaert

Schlossmacherite Crystallography

Axial Ratios:

a:c = 1:2.3821

Cell Dimensions:

a = 6.998, c = 16.67, Z = 3; V = 706.99 Den(Calc)= 3.27

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.96(1), 4.92(0.7), 2.98(0.5),

Physical Properties of Schlossmacherite

Color:

Gray green, Light green.

Density:

Diaphaniety:

Transparent to Translucent

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Schlossmacherite

Gladstone-Dale:

CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.108 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1826,KPDmeas= 0.199,KC= 0.2046

Optical Data:

Uniaxial (+), e=1.597.

Calculated Properties of Schlossmacherite

Electron Density:

r_electron=2.95 gm/cc
note: r_{Schlossmacherite}=3.00 gm/cc.

Fermion Index

Fermion Index = 0.00053
Boson Index = 0.99947

Photoelectric:

PE_{Schlossmacherite}= 17.04 barns/electron
U=PE_{Schlossmacherite} x r_electron= 50.21 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Schlossmacherite is Not Radioactive

Schlossmacherite Classification

Dana Class:

30.2.4.3 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.2)where (A B)2 XO4 Zq

(30.2.4)Alunite Group (Alunite Subgroup)

30.2.4.1 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

30.2.4.2 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

30.2.4.3 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m

30.2.4.4 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

30.2.4.5 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

30.2.4.6 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

30.2.4.7 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

30.2.4.8 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

Strunz Class:

VII/B.35-10 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.35 - Beudantite group

VII/B.35-10 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m

VII/B.35-20 Woodhouseite CaAl3(PO4)(SO4)(OH)6 R 3m 3 2/m

VII/B.35-30 Svanbergite SrAl3(PO4)(SO4)(OH)6 R 3m 3 2/m

VII/B.35-40 Kemmlitzite (Sr,Ce)Al3(AsO4)(SO4)(OH)6 R 3m 3 2/m

VII/B.35-60 Hinsdalite (Pb,Sr)Al3(PO4)(SO4)(OH)6 R 3m 3 2/m

VII/B.35-65 Orpheite PbAl3(PO4,SO4)2(OH)6(?) R 3m 3 2/m

VII/B.35-70 Hidalgoite PbAl3(AsO4)(SO4)(OH)6 R 3m 3 2/m

VII/B.35-75 Gallobeudantite! PbGa3[(AsO4),(SO4)]2(OH)6 R 3m 3m

VII/B.35-80 Corkite PbFe3(PO4)(SO4)(OH)6 R 3m 3m

VII/B.35-90 Beudantite PbFe3(AsO4)(SO4)(OH)6 R 3m 3 2/m

Other Schlossmacherite 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 Schlossmacherite :
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 -École des Mines de Paris

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Print or Cut-and-Paste your Schlossmacherite Specimen Label here :

Schlossmacherite

(H3O,Ca)Al3(AsO4,SO4)2(OH)6
Dana No: 30.2.4.3 Strunz No: VII/B.35-10
Locality:

Notes: