Hibschite Mineral Data
General Hibschite Information
Chemical Formula:
Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5)
Composition:
Molecular Weight = 426.39 gm
Calcium 28.20 % Ca 39.45 % CaO
Aluminum 12.66 % Al 23.91 % Al2 O3
Silicon 13.17 % Si 28.18 % SiO2
Hydrogen 0.95 % H 8.45 % H2 O
Oxygen 45.03 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Ca3 Al2 (SiO4 )2 (OH)4
Environment:
In a calcareous marl.
IMA Status:
Valid Species (Pre-IMA) 1905
Locality:
Marienberg, near Aussig, Bohemia of Czechoslovakia. Link to MinDat.org Location Data.
Name Origin:
Named for Josef Emanuel Hibsch (1852-1940), German Agricultural Academy, Tetschen, Czech Republic.
Name Pronunciation:
Hibschite + Pronunciation
Synonym:
Hydrogrossular
ICSD 31250
PDF 45-1447
Plazolite
Hibschite Image
Images:
Hibschite Crystallography
Cell Dimensions:
a = 12.01, Z = 8; V = 1,732.32 Den(Calc)= 3.27
Crystal System:
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d
X Ray Diffraction:
By Intensity(I/Io ): 1.62(1), 2.71(1), 3.03(0.8),
Physical Properties of Hibschite
Cleavage:
None
Color:
Colorless, White, Pale gray, Brown, Pink.
Density:
3.13
Diaphaneity:
Transparent to translucent
Fracture:
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:
Crystalline - Fine - Occurs as well-formed fine sized crystals.
Hardness:
6.5 - Pyrite
Luminescence:
Fluorescent, Short UV=clear orange.
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Hibschite
Gladstone-Dale:
CI meas = 0.018 (Superior) - where the CI = (1-KPDmeas /KC ) CI calc = 0.06 (Fair) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2064,KPDmeas = 0.2157,KC = 0.2197 Ncalc = 1.69 - 1.72
Optical Data:
Isotropic, n=1.675.
Calculated Properties of Hibschite
Electron Density:
Bulk Density (Electron Density)=3.14 gm/cc note: Specific Gravity of Hibschite =3.13 gm/cc.
Fermion Index:
Fermion Index = 0.006750264 Boson Index = 0.993249736
Photoelectric:
PEHibschite = 4.33 barns/electronU=PEHibschite x r Electron Density= 13.61 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hibschite is Not Radioactive
Hibschite Classification
Dana Class:
51.04.03d.01 (51) Nesosilicate Insular SiO4 Groups Only
(51.04) with cations in [6] and >[6] coordination
(51.04.03d) Garnet group (Hydrogarnet)
51.04.03d.01 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m
51.04.03d.02 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m
Strunz Class:
09.AD.25 09 - SILICATES (Germanates)
09.A - Nesosilicates
09.AD -Nesosilicates without additional anions;
09.AD.25 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m
09.AD.25 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 41 /acd 4/m 2/m 2/m
09.AD.25 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m
09.AD.25 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m
09.AD.25 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m
09.AD.25 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m
09.AD.25 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m
09.AD.25 Wadalite Ca6Al5Si2O16Cl3 I 4 3d 4 3m
09.AD.25 Holtstamite ! Ca3(Al,Mn)2(SiO4)2(OH)4 I 41 /acd 4/m 2/m 2/m
Other Hibschite Information
References:
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
See Also:
Links to other databases for Hibschite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST
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Hibschite
Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5)
Dana No: 51.04.03d.01 Strunz No: 09.AD.25
Locality:
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