Sjogrenite Mineral Data (original) (raw)
General Sjogrenite Information
Mg6Fe+++2(CO3)(OH)16•4(H2O)
Molecular Weight = 661.71 gm
Magnesium 22.04 % Mg 36.55 % MgO
Iron 16.88 % Fe 24.13 % Fe2O3
Hydrogen 3.66 % H 32.67 % H2O
Carbon 1.82 % C 6.65 % CO2
Oxygen 55.61 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Mg6Fe3+2(CO3)(OH)16•4(H2O)
In low-temperature hydrothermal veins in a metamorphosed Fe-Mn orebody (Langban, Sweden)
Valid Species (Pre-IMA) 1940
From Langban and Nordmark, Varmland, Sweden. Link to MinDat.org Location Data.
Named for Stens Anders Hjalmar Sjogren (1856-1922), Swedish mineralogist, Professor of Mineralogy, University of Stockholm, Stockholm, Sweden.
Sjoegrenite
Sjogrenite Image
Sjogrenite Crystallography
a:c = 1:5.01445
a = 3.113, c = 15.61, Z = 0.25; V = 131.01 Den(Calc)= 2.10
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
By Intensity(I/Io): 7.79(1), 3.89(0.8), 1.86(0.4),
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| | Ingram L , Taylor H F W , Mineralogical Magazine , 36 (1967) p.465-479, The crystal structures of sjoegrenite and pyroaurite, Locality: Sweden | | ------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Sjogrenite
White, Yellowish, Brownish.
2.11
Transparent
2.5 - Finger Nail
Vitreous - Waxy
Optical Properties of Sjogrenite
CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2674,KPDmeas= 0.2661,KC= 0.2742
Ncalc = 1.58
Uniaxial (-), e=1.55, w=1.573, bire=0.0230.
Calculated Properties of Sjogrenite
Bulk Density (Electron Density)=2.15 gm/cc
note: Specific Gravity of Sjogrenite =2.10 gm/cc.
Fermion Index = 0.02
Boson Index = 0.98
PESjogrenite = 5.43 barns/electron
U=PESjogrenite x rElectron Density= 11.65 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sjogrenite is Not Radioactive
Sjogrenite Classification
16b.06.01.03 (16b)Carbonates - Hydroxyl or Halogen
(16b.06)Dana Type
(16b.06.01)Sjorgrenite-Hydrotalcite Group (Sojogrenite Subgroup:Hexagonal)
16b.06.01.01 Manasseite Mg6Al2(CO3)(OH)16•4(H2O) P 63/mmc 6/m 2/m 2/m
16b.06.01.02 Barbertonite Mg6Cr2(CO3)(OH)16•4(H2O) P 63/mmc 6/m 2/m 2/m
16b.06.01.03 Sjogrenite Mg6Fe2(CO3)(OH)16•4(H2O) P 63/mmc 6/m 2/m 2/m
16b.06.01.04 Zaccagnaite! Zn4Al2(OH)12(CO3)•3(H2O) P 63/mmc 6/m 2/m 2/m
05.DA.45 05 - CARBONATES (NITRATES)
05.D - Carbonates with Additional Anions, with H2O
05.DA -With medium-sized cations
05.DA.45 Brugnatellite Mg6Fe(CO3)(OH)13•4(H2O) P 63/mmc 6/m 2/m 2/m
05.DA.45 Barbertonite Mg6Cr2(CO3)(OH)16•4(H2O) P 63/mmc 6/m 2/m 2/m
05.DA.45 Chlormagaluminite (Mg,Fe)4Al2(OH)12(Cl2,CO3)•2(H2O) P 6/mcm, P 6cm, P 6c2 Hex
05.DA.45 Zaccagnaite! Zn4Al2(OH)12(CO3)•3(H2O) P 63/mmc 6/m 2/m 2/m
05.DA.45 Manasseite Mg6Al2(CO3)(OH)16•4(H2O) P 63/mmc 6/m 2/m 2/m
05.DA.45 Sjogrenite Mg6Fe2(CO3)(OH)16•4(H2O) P 63/mmc 6/m 2/m 2/m
Other Sjogrenite Information
NAME( Athena) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Links to other databases for Sjogrenite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST
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Print or Cut-and-Paste your Sjogrenite Specimen Label here :
Sjogrenite
Mg6Fe+++2(CO3)(OH)16•4(H2O)
Dana No: 16b.06.01.03 Strunz No: 05.DA.45
Locality:
Notes: