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Karpinskite Mineral Data
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General Karpinskite Information
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 Chemical Formula: |
(Mg,Ni)2Si2O5(OH)2 (?) |
| Composition: |
Molecular Weight = 253.18 gm |
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Magnesium 9.60 % Mg 15.92 % MgO |
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Silicon 22.19 % Si 47.46 % SiO2 |
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Nickel 23.18 % Ni 29.50 % NiO |
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Hydrogen 0.80 % H 7.12 % H2O |
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Oxygen 44.24 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
NiMgSi2O5(OH)2 |
| Environment: |
An inadequately described mineral. |
| IMA Status: |
Valid Species (Pre-IMA) 1956 |
| Locality: |
Mizhne Tagilsk massif, Ural Mountains, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Alexander Petrovich Karpinsky (1846-1936), Russian geologist and president of the Russian Academy of Sciences. |
| Name Pronunciation: |
Karpinskite + Pronunciation  |
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Karpinskite Crystallography
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| Crystal System: |
Monoclinic Space Group: Unk |
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Physical Properties of Karpinskite
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| Cleavage: |
{???} Perfect |
| Color: |
Colorless, Greenish blue, Light blue. |
| Density: |
2.53 - 2.63, Average = 2.58 |
| Diaphaneity: |
Translucent |
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
| Hardness: |
2.5-3 - Finger Nail-Calcite |
| Luster: |
Greasy (Oily) |
| Streak: |
white |
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Optical Properties of Karpinskite
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| Gladstone-Dale: |
CI meas= -0.072 (Fair) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2215,KC= 0.2067
Ncalc = 1.52 - 1.54 |
| Optical Data: |
Biaxial (-), a=1.553-1.57, g=1.569-1.594, bire=0.0160-0.0240 |
| Pleochroism (x): |
none. |
| Pleochroism (y): |
none. |
| Pleochroism (z): |
none. |
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Calculated Properties of Karpinskite
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| Electron Density: |
Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Karpinskite =2.58 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEKarpinskite = 10.13 barns/electron
U=PEKarpinskite x rElectron Density= 26.01 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Karpinskite is Not Radioactive |
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Karpinskite Classification
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| Dana Class: |
78.05.06.01 (78)Unclassified silicates |
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(78.05)possible phyllosilicates |
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(78.05.06)Dana Group |
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78.05.06.01 Karpinskite (Mg,Ni)2Si2O5(OH)2(?) Unk Mono |
| Strunz Class: |
09.EC.60 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets |
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09.EC.60 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono |
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09.EC.60 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m |
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09.EC.60 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho |
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09.EC.60 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono |
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09.EC.60 Karpinskite (Mg,Ni)2Si2O5(OH)2(?) Unk Mono |
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09.EC.60 Illite* (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] C 2/m 2/m |
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09.EC.60 Hydrobiotite [K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2]•[(Mg,Fe,Al)3(Si,Al)4O10(OH)2•4(H2O)] C 2/m 2/m |
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09.EC.60 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono |
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09.EC.60 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono |
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09.EC.60 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m |
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09.EC.60 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho |
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09.EC.60 Brinrobertsite! (Na,K,Ca)x(Al,Fe,Mg)4(Si,Al)8O20(OH)4•3.54(H2O)[x=0.35,n=3.54] pseudo 2/m 2/m |
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Other Karpinskite Information
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| 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 Karpinskite :
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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Print or Cut-and-Paste your Karpinskite Specimen Label here :
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Karpinskite
(Mg,Ni)2Si2O5(OH)2 (?)
Dana No: 78.05.06.01 Strunz No: 09.EC.60
Locality:
Notes:
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