Mineralienatlas - Fossilienatlas
Kirchhoffite |
Collectors Summary
Streak color | weiß |
Lustre | Glasglanz |
Hardness (Mohs) | 6–6.5 |
Cleavages | keine Spaltbarkeit oder Teilbarkeit beobachtet |
Fracture | muschelig |
Crystal System | tetragonal, I41/acd |
Morphology | Körner mit 10 bis 80 μm Durchmesser als Bestandteil von blassbraunen Aggregaten bis 10 cm Größe, die in Quarz vorkommen. Sie bestehen in der Hauptsache aus Pektolith, daneben auch Quarz, Fluorit, Sokolovait, Baratovit, Aegirin, Polylithionit, Stillwellit-(Ce), Neptunit, Pekovit, Senkevichit, Mendeleevit-(Ce) |
Chemism
Chemical formula |
CsBSi2O6 |
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Empirical formula (analysis) |
(Cs1.02K0.01)Σ1.03B0.96Si2.02O6 |
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Additional chem. information |
Bor Analog von tetragonalem Pollucit |
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Chemical composition |
Cäsium, Silicium, Bor, Sauerstoff |
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Analysis wt% |
SiO2 : 40.47, B2O3 : 11.27, Cs2O : 48.16, Rb2O : 0.09, K2O : 0.11 (Ref: Canadian Mineralogist 2012) |
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Strunz 9th edition incl. updates |
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9: Silikate (Germanate) |
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Lapis Classification |
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VIII: SILIKATE |
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Classification by Hölzel |
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9: SILICATES |
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IMA status |
anerkannt - März 2010, IMA 2009-094, CNMNC Newsletter, April 2010, page 376; Mineralogical Magazine, 74, 375-377. |
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Mineral status |
anerkanntes Mineral |
IMA Classification
IMA Classification |
Zeolite group ⇒ ANA zeolite structure group |
Optical Properties
Optical Data Luminescence
fehlt |
Crystallography
Crystal Structure 3D
Open larger view |
Physical Properties
6–6.5 |
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850 (ungefähre Angabe abgeleitet aus der Mohshärte) |
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3.62(2) gem., Clerici solution 3.639 ber. |
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3.638 ( ρ calc. Mineralienatlas ) |
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keine Spaltbarkeit oder Teilbarkeit beobachtet |
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muschelig |
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spröde |
(Co-)Type locality
(Co-)Type locality |
Tadschikistan/Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij)/Dara-i-Pioz (Darai-Pioz) |
Type material |
Fersman Mineralogisches Museum, Moskau, Russland |
Collection number of type material |
Registrationsnummer 3923/1. |
Paragenesis of type material |
Pektolith, Quarz, Fluorit, Sokolovait, Baratovit, Aegirin, Polylithionit, Stillwellit-(Ce), Neptunit, Pekovit, Senkevichit, Mendeleevit-(Ce) |
Preface
References
IMA 2009-094, CNMNC Newsletter, April 2010, page 376; Mineralogical Magazine, 74, 375-377. Atali A. Agakhanov, Leonid A. Pautov, Vladimir Yu. Karpenko, Elena Sokolova, and Frank C. Hawthorne: Kirchhoffite, CsBSi2O6, a new mineral species from the Dara-I-Pioz alkaline massif, Tajikistan: description and crystal structure. Can Mineral Vol. 50, Nr. 2 (2012) S. 523-529. http://canmin.geoscienceworld.org/cgi/content/abstract/50/2/523 Dmitriy Belakovskiy, Fernando Cámara, G. Diego Gatta: New Mineral Names. American Mineralogist Vol. 99 (2014) S. 870-875. |
IMA group assignments
Other languages
German |
Kirchhoffit |
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English |
Kirchhoffite |
CNMNC (IMA)-Number
IMA 2009-094 |
CNMNC symbol
Symbol |
Khf |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | tkpHgnQDIkO5OPyvekTPhA |
GUID (Global unique identifier) | 82474AB6-0374-4322-B938-FCAF7A44CF84 |
Database ID | 6890 |