Hotsonite-VII Mineral Data (original) (raw)
General Hotsonite-VII Information
Chemical Formula:
Al11(SO4)3(PO4)2(OH)21•16(H2O)
Composition:
Molecular Weight = 1,420.33 gm
Aluminum 20.90 % Al 39.48 % Al2O3
Phosphorus 4.36 % P 9.99 % P2O5
Hydrogen 3.76 % H 33.61 % H2O
Sulfur 6.77 % S 16.91 % SO3
Oxygen 64.21 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Al11(SO4)3(PO4)2(OH)21•16(H2O)
IMA Status:
Approved IMA 1984
Locality:
Hotson farm, Pofadder, South Africa. Link to MinDat.org Location Data.
Name Origin:
Named for the locality.
Name Pronunciation:
Hotsonite-VII + Pronunciation 
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Hotsonite-VII Crystallography
Axial Ratios:
a:b:c =0.9631:1:0.9048
Cell Dimensions:
a = 11.23, b = 11.66, c = 10.55, Z = 1; alpha = 112.54°, beta = 107.53°, gamma = 64.45° V = 1,097.68 Den(Calc)= 2.15
Crystal System:
TriclinicSpace Group: P1 or P1
X Ray Diffraction:
By Intensity(I/Io): 10.05(1), 8.45(0.4), 4.63(0.2),
Physical Properties of Hotsonite-VII
Color:
White.
Density:
2.06
Habit:
Compact - Occurs as a compact mass.
Hardness:
2.5 - Finger Nail
Luster:
Silky
Streak:
white
Optical Properties of Hotsonite-VII
Gladstone-Dale:
CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.25,KPDmeas= 0.2524,KC= 0.2442
Ncalc = 1.5 - 1.51
Optical Data:
Biaxial (?), a=1.519, g=1.521, bire=0.0020
Calculated Properties of Hotsonite-VII
Electron Density:
Bulk Density (Electron Density)=2.14 gm/cc
note: Specific Gravity of Hotsonite-VII =2.08 gm/cc.
Fermion Index:
Fermion Index = 0.0008218107
Boson Index = 0.9991781893
Photoelectric:
PEHotsonite-VII = 1.31 barns/electron
U=PEHotsonite-VII x rElectron Density= 2.80 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hotsonite-VII is Not Radioactive
Hotsonite-VII Classification
Dana Class:
43.05.18.01 (43)Compound Phosphates, etc.
(43.05)(Hydrated Compound Anions With Hydroxyl or Halogen)
(43.05.18)Dana Group
43.05.18.01 Hotsonite-VII Al11(SO4)3(PO4)2(OH)21•16(H2O) P1 or P1 Tri
Strunz Class:
08.DF.05 08 - PHOSPHATES, ARSENATES, VANADATES
08.D - Phosphates, etc
08.DF -With only medium-sized cations, (OH,etc.):RO4 > 3:1
08.DF.05 Hotsonite-VI Al5(SO4)(PO4)(OH)10•8(H2O) P1 or P1 Tri
08.DF.05 Hotsonite-VII Al11(SO4)3(PO4)2(OH)21•16(H2O) P1 or P1 Tri
Other Hotsonite-VII 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 Hotsonite-VII :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Hotsonite-VII Specimen Label here :
Hotsonite-VII
Al11(SO4)3(PO4)2(OH)21•16(H2O)
Dana No: 43.05.18.01 Strunz No: 08.DF.05
Locality:
Notes: