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Rasvumite

Big Photo

Kirovskii apatite mine (Kirovsky Mine; Kirov Mine), Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Knut Eldjarn

Show Rasvumite Photos (5)
Formula:
KFe
 
2
S
 
3
System:OrthorhombicColour:Steel-gray, turning ...
Hardness:4 - 5
Name:Named after the type locality: Rasvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia.


Partially alters to orange-brown FexSy in open air, within days or hours.

Classification of Rasvumite

IMA status:Approved
Strunz 8th edition ID:2/F.07-10
Nickel-Strunz 10th (pending) edition ID:2.FB.20

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
B : With alkalies (without Cl, etc.)
Dana 8th edition ID:2.9.11.1

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
Hey's CIM Ref.:3.0.4

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
0 : Sulphides etc. of the alkalis
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Type Occurrence of Rasvumite

Co-type Localities:Kirovskii apatite mine (Kirovsky Mine; Kirov Mine), Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Apatitovyi Tsirk (Apatite Circus), Rasvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1970

Physical Properties of Rasvumite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Steel-gray, turning iridescent purple or bronze, to dull.
Hardness (Mohs):4 - 5

Crystallography of Rasvumite

Crystal System:Orthorhombic
Cell Parameters:a = 9.04Å, b = 11.01Å, c = 5.43Å
Ratio:a:b:c = 0.821 : 1 : 0.493
Unit Cell Volume:V 540.45 ų (Calculated from Unit Cell)

Chemical Properties of Rasvumite

Formula:
KFe
 
2
S
 
3
Essential elements:Fe, K, S
All elements listed in formula:Fe, K, S
Common Impurities:Na,Mg,Ca,Cu

Relationship of Rasvumite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.FB.05Caswellsilverite
NaCrS
 
2
2.FB.05Schöllhornite
Na
 
0.3
CrS
 
2
·H
 
2
O
2.FB.05Cronusite
Ca
 
0.2
CrS
 
2
· 2 H
 
2
O
2.FB.10Chvilevaite
Na(Cu,Fe,Zn)
 
2
S
 
4
2.FB.15Orickite
2CuFeS
 
2
·H
 
2
O
2.FB.20Pautovite
CsFe
 
2
S
 
3
2.FB.25Colimaite
K
 
3
VS
 
4
Related Minerals - Hey's Index Grouping:

- +
3.0.1Erdite
NaFeS
 
2
·2H
 
2
O
3.0.2Coyoteite
NaFe
 
3
S
 
5
·2H
 
2
O
3.0.3Chvilevaite
Na(Cu,Fe,Zn)
 
2
S
 
4
3.0.5Bartonite
K
 
3
Fe
 
10
S
 
14
3.0.6Murunskite
K
 
2
Cu
 
3
FeS
 
4

Other Names for Rasvumite

Synonyms:
IMA1970-028
Other Languages:
German:Rasvumit
Russian:Расвумит
Spanish:Rasvumita

Other Information

Magnetism:Ferromagnetic
Other Information:Slightly magnetic
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Rasvumite

Reference List:American Mineralogist (1971): 56: 1121.

Czamanske, G.K., R.C. Erd, M.N. Sokolova, M.G. Dobovol’skaya & M.T. Dmitrieva (1979), New data on rasvumite and djerfisherite: American Mineralogist: 64: 776-778.

American Mineralogist (1980): 65: 477-482.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 99: 712-720.

Internet Links for Rasvumite

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    Localities for Rasvumite

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 21st Nov 2009 19:58:55