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Olkhonskite

Formula:
(Cr,V)
 
2
Ti
 
3
O
 
9
System:MonoclinicColour:Black
Lustre:MetallicHardness:8


The chromium-dominant analogue of Schreyerite. [Zapiski Vsesoyuznyi Mineralogicheskoe Obshchestva 123(4), 98-103]

Classification of Olkhonskite

IMA status:Approved
Strunz 8th edition ID:4/C.26-15
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:8.4.1.2

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
4 : A2B3O9
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Type Occurrence of Olkhonskite

Type Locality:Ol'khonskiye Vorota (Olkhon Gate) Strait, Lake Baikal area, Irkutskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia
Year of Discovery:1994

Physical Properties of Olkhonskite

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

Crystallography of Olkhonskite

Crystal System:Monoclinic

Chemical Properties of Olkhonskite

Formula:
(Cr,V)
 
2
Ti
 
3
O
 
9
Essential elements:Cr, O, Ti
All elements listed in formula:Cr, O, Ti, V

Relationship of Olkhonskite to other Species

Related Minerals - Nickel-Strunz Grouping):
4.CB.05Brizziite
NaSb
5+
 
O
 
3
4.CB.05Corundum
Al
 
2
O
 
3
4.CB.05Ecandrewsite
(Zn,Fe
2+
 
,Mn
2+
 
)TiO
 
3
4.CB.05Eskolaite
Cr
 
2
O
 
3
4.CB.05Geikielite
MgTiO
 
3
4.CB.05Hematite
Fe
 
2
O
 
3
4.CB.05Ilmenite
Fe
2+
 
TiO
 
3
4.CB.05Karelianite
V
 
2
O
 
3
4.CB.05Melanostibite
Mn
2+
 
(Sb
5+
 
,Fe
3+
 
)O
 
3
4.CB.05Pyrophanite
Mn
2+
 
TiO
 
3
4.CB.05Auroantimonate
AuSbO
 
3
4.CB.05Romanite
([],Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
4.CB.10Avicennite
Tl
 
2
O
 
3
4.CB.10Bixbyite
(Mn
3+
 
,Fe
3+
 
)
 
2
O
 
3
4.CB.15Armalcolite
(Mg,Fe
2+
 
)Ti
 
2
O
 
5
4.CB.15Pseudobrookite
Fe
 
2
TiO
 
5
4.CB.15Mongshanite
(Mg,Cr,Fe
2+
 
)
 
2
(Ti,Zr)
 
5
O
 
12
4.CB.20Zincohögbomite-2N2S
Ti(Zn,Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.CB.20Zincohögbomite-2N6S
Ti(Zn,Mg,Fe)
 
6
Al
 
16
O
 
31
(OH)
4.CB.20Magnesiohögbomite-6N6S
Ti(Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.CB.20Magnesiohögbomite-2N3S
Ti(Mg,Fe)
 
3
Al
 
10
O
 
19
(OH)
4.CB.20Magnesiohögbomite-2N2S
Ti(Mg,Fe)
 
2
Al
 
8
O
 
15
(OH)
4.CB.20Ferrohögbomite-6N12S
Ti(Fe,Mg)
 
4
Al
 
12
O
 
23
(OH)
4.CB.25Pseudorutile
Fe
 
2
Ti
 
3
O
 
9
4.CB.25Tietaiyangite
Fe
3+
4
Fe
2+
 
TiO
 
9
4.CB.30Berdesinskiite
V
3+
2
TiO
 
5
4.CB.35Kyzylkumite
V
 
2
Ti
 
3
O
 
9
4.CB.35Schreyerite
V
 
2
Ti
 
3
O
 
9
4.CB.40Kamiokite
Fe
 
2
Mo
 
3
O
 
8
4.CB.40Nolanite
(V,Fe,Fe,Ti)
 
10
O
 
14
(OH)
 
2
4.CB.40Rinmanite
Zn
 
2
Sb
 
2
Mg
 
2
Fe
 
4
O
 
14
(OH)
 
2
4.CB.45Claudetite
As
 
2
O
 
3
4.CB.45Stibioclaudetite
AsSbO
 
3
4.CB.50Arsenolite
As
 
2
O
 
3
4.CB.50Sénarmontite
Sb
 
2
O
 
3
4.CB.55Valentinite
Sb
 
2
O
 
3
4.CB.60Bismite
Bi
 
2
O
 
3
4.CB.65Sphaerobismoite
Bi
 
2
O
 
3
4.CB.70Sillénite
Bi
 
12
SiO
 
20

Other Names for Olkhonskite

Synonyms:
IMA1993-035
German names:
Olkhonskit
Spanish names:
Olkhonskita

Other Information

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 Olkhonskite

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

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

Internet Links for Olkhonskite

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    Localities for Olkhonskite

    (TL) indicates type locality. ? 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
     
    • Eastern-Siberian Region
      • Transbaikalia (Zabaykalye)
        • Irkutskaya Oblast'
          • Lake Baikal area
    		[MinRec 27:304]
    Mineral and/or Locality
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