Kassite (original) (raw)

A valid IMA mineral species

About KassiteHide

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Colour:

Brownish pink to pale yellow

Crystal System:

Monoclinic

Name:

In honour of Academician Nikolai Grigor’evich Kassin (Николай Григорьевич Кассин) (14 December 1885, Gnusino, Vyatka province, Russian empire - 28 October 1949, Alma-Ata, Kazakh SSR (now Kazakhstan), USSR), geologist with the Academy of Sciences of the Kazakh SSR. He discovered the Afrikanda massif, Russia.

This page provides mineralogical data about Kassite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:2166:7

776ffbf7-07fd-4965-9b55-48bc3f6d148c

IMA Classification of KassiteHide

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Type description reference:

Kukharenko, A.A., Orlova, M.P., Bulakh, A.G., Bagdasarov, E.A., Rimskaya-Korsakova, O.M., Nefedov, Y.I., Ilyinskiy, G.A., Sergeyev, A.C., Abakumova, N.B. (1965) The Caledonian complex of the ultrabasic alkaline rocks and carbonatites of the Kola Peninsula and northern Karelia. Izdatelstvo "Nedra" Moskva: 1965: 368-375.

Classification of KassiteHide

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4.DH.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra

8.3.9.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6

7.9.7

7 : Oxides and Hydroxides
9 : Oxides of Ti

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of KassiteHide

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Colour:

Brownish pink to pale yellow

Cleavage:

Perfect
Perfect on {010} and distinct on {101}.

Density:

3.42 g/cm3 (Measured) 3.418 g/cm3 (Calculated)

Optical Data of KassiteHide

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RI values:

_n_α = 1.950(1) _n_β = 2.130 _n_γ = 2.210

2V:

Measured: 58° , Calculated: 62°

δ = 0.260

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Dispersion:

very strong: r> v

Comments:

Colorless to pale yellow

Chemistry of KassiteHide

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Mindat Formula:

CaTi2O4(OH)2

Crystallography of KassiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 5.275(1) Å, b = 9.009(2) Å, c = 9.557(2) Å
β = 90.43°

Ratio:

a:b:c = 0.586 : 1 : 1.061

Unit Cell V:

454.16 ų (Calculated from Unit Cell)

Morphology:

Flattened on {010}, the predominant face. Smaller {181} and {270} and minor {251}, {031} and {101}.

Twinning:

Twinning common on (101} and (181).

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0003155	Kassite	Grey I E, Mumme W G, Pekov I V, Pushcharovsky D Y (2003) The crystal structure of chromian kassite from the Saranovskoye deposit, Northern Urals, Russia American Mineralogist 88 1331-1335		2003	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of KassiteHide

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General Appearance of Type Material:

Crystals on the walls of miarolitic cavities. Forms pseudomorphs after perovskite and replaces ilmentite.

Place of Conservation of Type Material:

Mineralogcal Museum, St. Petersburg University, St. Petersburg, Russia, 17402.

Geological Setting of Type Material:

Miarolitic cavities of alkalic pegmatites.

Associated Minerals at Type Locality:

Reference:

Kukharenko, A.A., Orlova, M.P., Bulakh, A.G., Bagdasarov, E.A., Rimskaya-Korsakova, O.M., Nefedov, Y.I., Ilyinskiy, G.A., Sergeyev, A.C., Abakumova, N.B. (1965) The Caledonian complex of the ultrabasic alkaline rocks and carbonatites of the Kola Peninsula and northern Karelia. Izdatelstvo "Nedra" Moskva: 1965: 368-375.

Other Language Names for KassiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Thermal Behaviour:

DTA curve shows a small endothermic effect at 250-300 C, a large one at 600-700 C (loss of hydroxyl), and a sharp exothermic break at 800-850 C (formation of perovskite + rutile).

Notes:

Insoluble in acids.

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 KassiteHide

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References for KassiteHide

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Reference List:

Kukharenko, A.A., Orlova, M.P., Bulakh, A.G., Bagdasarov, E.A., Rimskaya-Korsakova, O.M., Nefedov, Y.I., Ilyinskiy, G.A., Sergeyev, A.C., Abakumova, N.B. (1965) The Caledonian complex of the ultrabasic alkaline rocks and carbonatites of the Kola Peninsula and northern Karelia. Izdatelstvo "Nedra" Moskva: 1965: 368-375.

Bortolozzi, G., Boscardin, M., Rocchetti, I., Bersani, D. (2013): Cafetite e kassite della cava di Pilcante in Val d'Adige (Ala, Trento). Micro, 11, 1, 39-48.

Localities for KassiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.