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Olkhonskite

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Formula:
Cr2Ti3O9
System:
Monoclinic
Colour:
Black
Lustre:
Metallic
Hardness:
8
The chromium-dominant analogue of Schreyerite. [Zapiski Vsesoyuznyi Mineralogicheskoe Obshchestva 123(4), 98-103]


Classification of Olkhonskite

Approved
4.CB.35

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
8.4.1.2

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
4 : A2B3O9

Physical Properties of Olkhonskite

Metallic
Colour:
Black
Streak:
Black
Hardness (Mohs):
8

Chemical Properties of Olkhonskite

IMA Formula:
Cr2Ti3O9
Elements listed in formula:

Crystallography of Olkhonskite

Crystal System:
Monoclinic

Type Occurrence of Olkhonskite

Relationship of Olkhonskite to other Species

4.CB.05BrizziiteNaSbO3
4.CB.05CorundumAl2O3
4.CB.05EcandrewsiteZnTiO3
4.CB.05EskolaiteCr2O3
4.CB.05GeikieliteMgTiO3
4.CB.05HematiteFe2O3
4.CB.05IlmeniteFe2+Ti4+O3
4.CB.05KarelianiteV2O3
4.CB.05MelanostibiteMn2+(Sb5+,Fe3+)O3
4.CB.05PyrophaniteMn2+TiO3
4.CB.05AkimotoiteMgSiO3
4.CB.05AuroantimonateAuSbO3
4.CB.05UM1998-11-O-AuHSbAu2+Sb3+O2(OH)
4.CB.05TistariteTi2O3
4.CB.10AvicenniteTl2O3
4.CB.10BixbyiteMn23+O3
4.CB.15Armalcolite(Mg,Fe2+)Ti2O5
4.CB.15PseudobrookiteFe23+TiO5
4.CB.20Zincohögbomite-2N2S(Zn,Al,Fe)3(Al,Fe,Ti)8O15(OH)
4.CB.20Zincohögbomite-2N6S(Zn,Al)7(Al,Fe3+,Ti,Mg)16O31(OH)
4.CB.20Magnesiohögbomite-6N6S(Mg,Al,Fe)3(Al,Ti)8O15(OH)
4.CB.20Magnesiohögbomite-2N3S(Mg,Fe,Zn,Ti)4(Al,Fe)10O19(OH)
4.CB.20Magnesiohögbomite-2N2S(Al,Mg,Fe,Ti)22(O,OH)32
4.CB.20Ferrohögbomite-6N12S[(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6
4.CB.25PseudorutileFe23+Ti34+O9
4.CB.25KleberiteFeTi6O11(OH)5
4.CB.30BerdesinskiiteV23+TiO5
4.CB.30OxyvaniteV3O5
4.CB.35SchreyeriteV23+Ti34+O9
4.CB.40KamiokiteFe22+Mo34+O8
4.CB.40Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
4.CB.40RinmaniteMg2Fe4Zn2Sb2O14(OH)2
4.CB.40IseiteMn2Mo3O8
4.CB.40MajindeiteMg2Mo3O8
4.CB.45ClaudetiteAs2O3
4.CB.45StibioclaudetiteAsSbO3
4.CB.50ArsenoliteAs2O3
4.CB.50SenarmontiteSb2O3
4.CB.55ValentiniteSb2O3
4.CB.60BismiteBi2O3
4.CB.65SphaerobismoiteBi2O3
4.CB.70SilléniteBi12SiO20
4.CB.75KyzylkumiteTi2V3+O5(OH)
4.CB.80TietaiyangiteFe43+Fe2+TiO9

Other Names for Olkhonskite

Name in Other Languages:
German:Olkhonskit
Spanish:Olkhonskita

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.

References for Olkhonskite

Reference List:
Zapiski Vsesoyuznyi Mineralogicheskoe Obshchestva (1994): 123(4): 98-103.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Olkhonskite

mindat.org URL:
https://www.mindat.org/min-2985.html
Please feel free to link to this page.

Localities for Olkhonskite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia (TL)
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Lake Baikal area
[MinRec 27:304]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Sweden
 
  • Västergötland
    • Gotene
      • Kinnekulle
        • Thorsberg quarry
Schmitz, B., Yin, Q.-Z., Sanborn, M.E., Tassinari, M., Caplan, C.E., Huss, G.R. (2016): A new type of solar-system material recovered from Ordovician marine limestone. Nature Communications: 7: 11851; doi: 10.1038/ncomms11851
Mineral and/or Locality  
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