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 % Al₂O₃

Silicon 13.17 % Si 28.18 % SiO₂

Hydrogen 0.95 % H 8.45 % H₂O

Oxygen 45.03 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₃Al₂(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

Comments: Deep red translucent dodecahedral crystals of hibschite.
Location: Monte Faiello, Liguria, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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:

PE_Hibschite= 4.33 barns/electron
U=PE_Hibschite x rElectron 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 43d 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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