Shuiskite Mineral Data (original) (raw)
General Shuiskite Information
Chemical Formula:
Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2•(H2O)
Composition:
Molecular Weight = 506.85 gm
Calcium 15.81 % Ca 22.13 % CaO
Magnesium 2.88 % Mg 4.77 % MgO
Aluminum 6.92 % Al 13.08 % Al2O3
Chromium 13.34 % Cr 17.44 % CrO
Iron 1.10 % Fe 1.42 % FeO
Silicon 14.96 % Si 32.01 % SiO2
Hydrogen 0.80 % H 7.11 % H2O
Oxygen 44.19 % O
______ ______
100.00 % 97.95 % = TOTAL OXIDE
Empirical Formula:
Ca2Mg0.6Al0.3Fe2+0.1Cr1.3Al0.7Si2.7Al0.3O11(OH)2�(H2O)
Environment:
On the walls of fractures in chromitite.
IMA Status:
Valid Species (Pre-IMA) 1926
Locality:
From the Sarany deposit, Bisersk, in the Gorozavod district, Northern Ural Mountains, Russia. Link to MinDat.org Location Data.
Name Origin:
Named for V. P. Shuisk, petrologist of the Ural Scientific Center, Yekaterinburg (Sverdlovsk), Russia.
Name Pronunciation:
Shuiskite + Pronunciation 
Shuiskite Image
Images:
Shuiskite Crystallography
Axial Ratios:
a:b:c =1.5226:1:3.3219
Cell Dimensions:
a = 8.897, b = 5.843, c = 19.41, Z = 4; beta = 98° V = 999.21 Den(Calc)= 3.37
Crystal System:
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/m
X Ray Diffraction:
By Intensity(I/Io): 1.487(1), 1.593(1), 2.9(0.9),
Physical Properties of Shuiskite
Cleavage:
{001} Perfect
Color:
Dark brown.
Density:
3.24
Diaphaneity:
Semitransparent
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Fibrous - Crystals made up of fibers.
Habit:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
light greenish brown
Optical Properties of Shuiskite
Gladstone-Dale:
CI meas= -0.102 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.06 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2243,KPDmeas= 0.2333,KC= 0.2117
Ncalc = 1.69 - 1.71
Optical Data:
Biaxial (-), a=1.725-1.733, b=1.762-1.772, g=1.769-1.775, bire=0.0420-0.0440, 2V(Calc)=30-46, 2V(Meas)=40-50.
Pleochroism (x):
blue violet.
Pleochroism (y):
yellowish green.
Pleochroism (z):
dark violet.
Calculated Properties of Shuiskite
Electron Density:
Bulk Density (Electron Density)=3.35 gm/cc
note: Specific Gravity of Shuiskite =3.37 gm/cc.
Fermion Index:
Fermion Index = 0.02
Boson Index = 0.98
Photoelectric:
PEShuiskite = 6.05 barns/electron
U=PEShuiskite x rElectron Density= 20.25 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shuiskite is Not Radioactive
Shuiskite Classification
Dana Class:
58.02.02.09 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
(58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)
(58.02.02)Pumpellyite group
58.02.02.01 Julgoldite-(Fe++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(OH)2•(H2O) C 2/m 2/m
58.02.02.02 Julgoldite-(Fe+++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(O,OH)2•(H2O) A2/m 2/m
58.02.02.03 Okhotskite-(Mg)* Ca3(Mg,Mn)(Mn,Al,Fe)(SiO4)(Si2O7)(OH)2•(H2O) Mono
58.02.02.04 Okhotskite-(Mn++) Ca2(Mn,Mg)(Mn,Al,Fe)Si3O10(OH)4 A2/m 2/m
58.02.02.05 Pumpellyite-(Fe++) Ca2Fe(Al,Fe)2(SiO4)(Si2O7)(OH)2•(H2O) A2/m 2/m
58.02.02.06 Pumpellyite-(Fe+++) Ca2FeAl2(SiO4)(Si2O7)(OH,O)2•(H2O) A2/m 2/m
58.02.02.07 Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2•(H2O) A2/m 2/m
58.02.02.08 Pumpellyite-(Mn++) Ca2(Mn,Mg)(Al,Mn,Fe)2(SiO4)(Si2O7(OH)2•(H2O) A2/m 2/m
58.02.02.09 Shuiskite Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2•(H2O) A2/m 2/m
58.02.02.10 Poppiite! Ca2(V,Fe,Mg)(V,Al)2(Si,Al)3(O,OH)14 C 2/m 2/m
58.02.02.11 Pumpellyite-(Al)! Ca2(Al,Fe,Mg)Al2(SiO4)(Si2O7)(OH,O)2•H2O A2/m 2/m
Strunz Class:
09.BG.20 09 - SILICATES (Germanates)
09.B - Sorosilicates
09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;
09.BG.20 Julgoldite-(Fe++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(OH)2•(H2O) C 2/m 2/m
09.BG.20 Julgoldite-(Fe+++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(O,OH)2•(H2O) A2/m 2/m
09.BG.20 Pumpellyite-(Fe++) Ca2Fe(Al,Fe)2(SiO4)(Si2O7)(OH)2•(H2O) A2/m 2/m
09.BG.20 Okhotskite-(Mg)* Ca3(Mg,Mn)(Mn,Al,Fe)(SiO4)(Si2O7)(OH)2•(H2O) Mono
09.BG.20 Okhotskite-(Mn++) Ca2(Mn,Mg)(Mn,Al,Fe)Si3O10(OH)4 A2/m 2/m
09.BG.20 Pumpellyite-(Fe+++) Ca2FeAl2(SiO4)(Si2O7)(OH,O)2•(H2O) A2/m 2/m
09.BG.20 Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2•(H2O) A2/m 2/m
09.BG.20 Pumpellyite-(Mn++) Ca2(Mn,Mg)(Al,Mn,Fe)2(SiO4)(Si2O7(OH)2•(H2O) A2/m 2/m
09.BG.20 Shuiskite Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2•(H2O) A2/m 2/m
09.BG.20 Pumpellyite-(Al)! Ca2(Al,Fe,Mg)Al2(SiO4)(Si2O7)(OH,O)2•H2O A2/m 2/m
09.BG.20 Poppiite! Ca2(V,Fe,Mg)(V,Al)2(Si,Al)3(O,OH)14 C 2/m 2/m
Other Shuiskite Information
References:
NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)
See Also:
Links to other databases for Shuiskite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Shuiskite
Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2•(H2O)
Dana No: 58.02.02.09 Strunz No: 09.BG.20
Locality:
Notes: