Hibschite
A variety of Grossular
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About Hibschite
Josef Emanuel Hibsch
Formula:
Ca3Al2(SiO4)3-x(OH)4x
(x = 0.2-1.5)
Colour:
Usually colourless, pale yellow, may have tints of grey, green to bluish green, also may be smoky grey to black.
Lustre:
Vitreous, Sub-Vitreous
Hardness:
6½
Specific Gravity:
3.06 - 3.25
Crystal System:
Isometric
Name:
Named by Felix Cornu in 1905 for Josef Emanuel Hibsch (26 March 1852, Hummel, Bohemia (now Homole u Panny, Czech Republic) - 4 November 1940, Vienna, Austria), geologist with the Landwirtschaftliche Akademie (Academy of Agriculture) at Tetschen (Decin), Bohemia.
Hibsch devoted himself in particular to the geological exploration of the Central Bohemian Uplands. Hibsch created the first detailed geological maps of this region, each of which was published with a textual explanation.
Hibsch devoted himself in particular to the geological exploration of the Central Bohemian Uplands. Hibsch created the first detailed geological maps of this region, each of which was published with a textual explanation.
A variety of grossular with part of the orthosilicate ions replaced by hydroxide ions. Previously considered by some to be a discrete mineral species itself. The end-member composition is called katoite.
Hibschite is now an informal intermediate composition in the Grossular-Katoite Series, mostly previously known as hydrogrossular.
Igumnovite is similar, with Cl in place of (OH).
Visit gemdat.org for gemological information about Hibschite.
Hibschite is now an informal intermediate composition in the Grossular-Katoite Series, mostly previously known as hydrogrossular.
Igumnovite is similar, with Cl in place of (OH).
Visit gemdat.org for gemological information about Hibschite.Unique Identifiers
Mindat ID:
1898 (as Hibschite)
1755 (as Grossular)
1755 (as Grossular)
Long-form identifier:
mindat:1:1:1898:8 (as Hibschite)
mindat:1:1:1755:4 (as Grossular)
mindat:1:1:1755:4 (as Grossular)
Classification of Hibschite
51.4.3d.1
51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Hbs | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Hbs | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Physical Properties of Hibschite
Vitreous, Sub-Vitreous
Transparency:
Transparent
Colour:
Usually colourless, pale yellow, may have tints of grey, green to bluish green, also may be smoky grey to black.
Comment:
Dark colour may be due to zonation with melanite.
Streak:
White
Hardness:
6½ on Mohs scale
Comment:
May be as hard as 7
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.06 - 3.25 g/cm3 (Measured) 3.28 g/cm3 (Calculated)
Optical Data of Hibschite
Type:
Isotropic
Chemistry of Hibschite
Mindat Formula:
Ca3Al2(SiO4)3-x(OH)4x
(x = 0.2-1.5)
(x = 0.2-1.5)
Common Impurities:
Fe,Mn,Mg,S
Crystallography of Hibschite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Ia3d
Cell Parameters:
a = 12 Å
Unit Cell V:
1,728.00 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Crystals are rare, but may be dominantly octahedral. Occasionally dodecahedral.
Comment:
a varies from 11.90 to 12.287
First Recorded Occurrence of Hibschite
General Appearance of First Recorded Material:
Colourless to pale yellow overgrowths on "titaniferous melanite" crystal.
Synonyms of Hibschite
Other Language Names for Hibschite
Common Associates
Associations Based on Photo Data:
| 27 photos of Hibschite associated with Pectolite | NaCa2Si3O8(OH) |
| 9 photos of Hibschite associated with Calcite | CaCO3 |
| 6 photos of Hibschite associated with Chromite | Fe2+Cr3+2O4 |
| 6 photos of Hibschite associated with Fluorite | CaF2 |
| 5 photos of Hibschite associated with Grossular | Ca3Al2(SiO4)3 |
| 5 photos of Hibschite associated with Chantalite | CaAl2(SiO4)(OH)4 |
| 3 photos of Hibschite associated with Albite | Na(AlSi3O8) |
| 3 photos of Hibschite associated with Wollastonite Group | |
| 3 photos of Hibschite associated with Annite | KFe2+3(AlSi3O10)(OH)2 |
| 3 photos of Hibschite associated with Pyrrhotite | Fe1-xS |
Fluorescence of Hibschite
Generally non-fluorescent. One locality (Mosjoen, Nordland, Norway) has distinct orange fluorescence SW UV.
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Hibschite
mindat.org URL:
https://www.mindat.org/min-1898.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for Hibschite
Reference List:
Passaglia, Elio, Rinaldi, Romano (1984) Katoite, a new member of the Ca3Al2(SiO4)3-Ca3Al2(OH)12 series and a new nomenclature for the hydrogrossular group of minerals. Bulletin de Minéralogie, 107 (5) 605-618 doi:10.3406/bulmi.1984.7804
Dunn, Pete J., Fleischer, Michael, Langley, Richard H., Shigley, James E., Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (7-8) 871-881 p.873
Armbruster, Thomas; Lager, George A. (1989) Oxygen disorder and the hydrogen position in garnet-hydrogarnet solid solutions. European Journal of Mineralogy, 1 (3). p.363-370. doi:10.1127/ejm/1/3/0363
Lager, George A., Armbruster, Thomas, Rotella, Frank J., Rossman, George R. (1989) OH substitution in garnets: X-ray and neutron diffraction, infrared, and geometric-modeling studies. American Mineralogist, 74 (7-8) 840-851
Rinaldi, Romano, Passaglia, Elio (1989) Hibschite topotype: crystal chemical characterization. European Journal of Mineralogy, 1 (5) 639-644 doi:10.1127/ejm/1/5/0639
Localities for Hibschite
Showing 130 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Australia | |
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| Birch (1999) |
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Austria | |
| Kolitsch (2008) |
Canada | |
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| Chakhmouradian et al. (2006) |
| Sabina (1983) |
| Grice (1989) +1 other reference |
China | |
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Czech Republic | |
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| Ulrych (2000) |
| Pauliš |
Finland | |
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France | |
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| Pusztaszeri (1969) |
Germany | |
| Wittern (2001) |
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| Blaß et al. (1999) |
Greece | |
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Hungary | |
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Italy | |
| Russo et al. (2004) |
| NHM collection (was hessonite) |
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| Bortolozzi (n.d.) |
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| Cámara et al. (2012) |
| Boscardin et al. (2011) +1 other reference |
| Zordan A. (2014) |
| Boscardin et al. (2011) |
| Boscardin et al. (2004) +2 other references |
Japan | |
| - (n.d.) |
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| Excaibur Minerals specimen |
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Jordan | |
| Sokol +9 other references |
Kazakhstan | |
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Mexico | |
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Middle East | |
| Gross (1977) | |
Morocco | |
| Weiß (2006) |
New Zealand | |
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Norway | |
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| Nissen. August L. (1972) |
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| Jamtveit et al. (1997) |
Oman | |
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Pacific Ocean | |
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Poland | |
| Galuskin et al. (2003) |
| Włodyka (2010) |
| Włodyka (2010) |
Romania | |
| Marincea +4 other references |
| minerals-of-the-carpathians.eu (2008) |
| Marincea et al. (2011) |
| Marincea et al. (2014, September) |
| Marincea +2 other references |
Russia | |
| Cesnokov et al. (1998) |
| Cesnokov et al. (1998) | |
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| Chakhmouradian et al. (2002) +1 other reference |
| Galuskina et al. (2005) +1 other reference |
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Slovakia | |
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| Koděra et al. (1986) |
| Zajzon N. et al. (2021) |
South Africa | |
| Coetzee (1976) |
| Coetzee (1976) | |
| Cairncross et al. (1995) +1 other reference |
| Cairncross et al. (1995) |
| Cairncross et al. (1995) +1 other reference |
| Cairncross et al. (1995) | |
| Coetzee (1976) | |
| Coetzee (1976) | |
| Cairncross et al. (1995) |
| Cairncross et al. (1995) | |
| Cairncross et al. (1995) |
| Cairncross et al. (1995) | |
| Cairncross et al. (1995) | |
Spain | |
| Calvo Rebollar (2018) +1 other reference |
Sweden | |
| Holtstam et al. (1999) |
| Nysten (2004) |
Taiwan | |
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Turkey | |
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| Sarp et al. (1977) | |
UK | |
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Ukraine | |
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USA | |
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| Cannon (1975) |
| Cannon (1975) |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada