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Romanite

Big Photo

Strelka U ore occurrence, Dambuki ore cluster, Amurskaya Oblast', Far-Eastern Region, Russia
© Pavel M. Kartashov

Show Romanite Photos (4)
Formula:
([],Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
Lustre:VitreousHardness:6½ - 7
Name:After the country of Romania.


Member of Crichtonite Group.

A poorly characterized mineral from Romania has been referred to as "romanite" (Dragila, 1990), but it has not been submitted to the I.M.A. Commission on New Minerals and Mineral Names (Jambor and Puziewicz 1992) and therefore cannot be regarded as a valid mineral species. Dragila assigned "romanite" to the Davidite Group, but such assignment is highly questionable (Orlandi et al., 1997).

Classification of Romanite

IMA status:Not Approved 1990
Nickel-Strunz 10th (pending) edition ID:4.CB.05

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
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Physical Properties of Romanite

Lustre:Vitreous
Hardness (Mohs):6½ - 7

Chemical Properties of Romanite

Formula:
([],Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
Essential elements:Fe, O, Ti, U
All elements listed in formula:Ca, Fe, O, Pb, Ti, U

Relationship of Romanite to other Species

Member of Group:
Crichtonite Group:
AB
 
21
O
 
38
 or A{BC
 
2
D
 
6
 E
 
12
}O
 
38
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.05Akimotoite
(Mg,Fe
2+
 
)SiO
 
3
4.CB.05Auroantimonate
AuSbO
 
3
4.CB.05UM1998-11-O-AuHSb
Au
 
2
SbO
 
2
(OH)
4.CB.05Tistarite
Ti
 
2
O
 
3
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
(Zn,Al,Fe)
 
2
(Al,Fe,Ti)
 
8
O
 
15
(OH)
4.CB.20Zincohögbomite-2N6S
(Zn,Al)
 
7
(Al,Fe,Ti,Mg)
 
16
O
 
31
(OH)
4.CB.20Magnesiohögbomite-6N6S
(Mg,Al,Fe)
 
2
(Al,Ti)
 
8
O
 
15
(OH)
4.CB.20Magnesiohögbomite-2N3S
(Mg,Fe,Zn,Ti)
 
3
(Al,Fe)
 
10
O
 
19
(OH)
4.CB.20Magnesiohögbomite-2N2S
(Mg,Al,Fe)
 
2
(Al,Fe,Ti)
 
8
O
 
15
(OH)
4.CB.20Ferrohögbomite-6N12S
(Fe,Mg,Zn)
 
4
(Al,Ti,Fe)
 
12
O
 
23
(OH)
4.CB.25Pseudorutile
Fe
 
2
Ti
 
3
O
 
9
4.CB.30Berdesinskiite
V
3+
2
TiO
 
5
4.CB.30Oxyvanite
V
 
3
O
 
5
4.CB.35Olkhonskite
(Cr,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
4.CB.75Kyzylkumite
V
 
2
Ti
 
3
O
 
9
4.CB.80Tietaiyangite
Fe
3+
4
Fe
2+
 
TiO
 
9

Other Names for Romanite

Other Languages:
German:Romanit
Spanish:Romanita

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 Romanite

Reference List:Ryzhov B.I., Lyubomilova G.V., Viktorov V.V. (1983) The find of compositionaly unusual davidite in zone of layer oxidation Paleocenic sediments. Doklady Akademii Nauk SSSR, 269, N4, 924-928 (in Russian).

Dragila M. (1990) Observatli mineralogice asupra unul nou mineral din grupa daviditului. Revista Minelor, 41, N8, 414-418 (in Italian).

American Mineralogist 77 (1992), 1117.

Orlandi, P., Pasero, M., Duchi, HG., and Olmi, F. (1997): Dessauite, (Sr,Pb)(Y,U)(Ti,Fe3+)20O38, a new mineral of the crichtonite group from Buca della Vena mine, Tuscany, Italy. American Mineralogist: 82: 807-811.

Internet Links for Romanite

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    Localities for Romanite

    (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.
    Mongolia
     
    • Hovd Aimag (Khovd Aimag)
      • Altai Mts
    		P.M. Kartashov data
    Russia
     
    • Far-Eastern Region
      • Amurskaya Oblast'
        • Dambuki ore cluster
    		L.B. Larichev, V.A. Oznobikhin & E.V. Petrosyan data
    L.I. Larichev, V.A. Oznobikhin & E.V. Petrosyan data
    L.B. Larichev, V.A. Oznobikhin & E.V. Petrosyan data
    Mineral and/or Locality
    Google
     
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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: 2nd Nov 2009 07:57:46