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Vanadomalayaite

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Val Graveglia (Gambatesa) Mine, Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy
© G. Armellino

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Formula:
CaV
4+
 
[O|SiO
 
4
]
System:MonoclinicColour:Deep red
Lustre:AdamantineHardness:6
Name:Named for its vanadium content and chemical relationship to malayaite.


Titanite Group.

The vanadium (V4+) analogue of titanite and malayaite.

Classification of Vanadomalayaite

IMA status:Approved 1993
Strunz 8th edition ID:8/B.12-15
Nickel-Strunz 10th (pending) edition ID:9.AG.15

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
Dana 8th edition ID:52.4.3.3

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
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Type Occurrence of Vanadomalayaite

Type Locality:Val Graveglia (Gambatesa) Mine, Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy

Physical Properties of Vanadomalayaite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent
Colour:Deep red
Hardness (Mohs):6

Crystallography of Vanadomalayaite

Crystal System:Monoclinic

Optical Data of Vanadomalayaite

Type:Biaxial (+)
RI values: nα = 1.950 nγ = 2.105
2V:Measured: 17° to 40°
Maximum Birefringence:δ = 0.155

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:very strong

Chemical Properties of Vanadomalayaite

Formula:
CaV
4+
 
[O|SiO
 
4
]
Essential elements:Ca, O, Si, V
All elements listed in formula:Ca, O, Si, V

Relationship of Vanadomalayaite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.AG.05Abswurmbachite
CuMn
3+
6
O
 
8
(SiO
 
4
)
9.AG.05Braunite
Mn
2+
 
Mn
3+
6
[O
 
8
|SiO
 
4
]
9.AG.05Neltnerite
CaMn
3+
6
[O
 
8
|SiO
 
4
]
9.AG.10Långbanite
(Mn
2+
 
,Ca)
 
4
(Mn
3+
 
,Fe
3+
 
)
 
9
Sb
5+
 
[O
 
8
|SiO
 
4
]
 
2
9.AG.15Malayaite
CaSn[O|SiO
 
4
]
9.AG.15Titanite
CaTi[O|SiO
 
4
]
9.AG.20Cerite-(Ce)
(Ce,Ca)
 
9
(Mg,Fe)Si
 
7
(O,OH,F)
 
28
9.AG.20Cerite-(La)
(La,Ce,Ca)
 
9
(Fe,Ca,Mg)(SiO
 
4
)
 
3
[SiO
 
3
(OH)]
 
4
(OH)
 
3
9.AG.25Trimounsite-(Y)
Y
 
2
Ti
 
2
[O
 
5
|SiO
 
4
]
9.AG.25Yftisite-(Y)
(Y,Dy,Er)
 
4
(Ti,Sn)O(SiO
 
4
)
 
2
(F,OH)
 
6
9.AG.30Sitinakite
KNa
 
2
Ti
 
4
Si
 
2
O
 
13
(OH)·2H
 
2
O
9.AG.35Kittatinnyite
Ca
 
2
Mn
 
2
Mn(SiO
 
4
)
 
2
(OH)
 
4
·9H
 
2
O
9.AG.40Natisite
Na
 
2
Ti[O|SiO
 
4
]
9.AG.40Paranatisite
Na
 
2
Ti[O|SiO
 
4
]
9.AG.45Törnebohmite-(Ce)
(Ce,La)
 
2
Al(SiO
 
4
)
 
2
OH
9.AG.45Törnebohmite-(La)
(La,Ce)
 
2
Al(SiO
 
4
)
 
2
OH
9.AG.50Kuliokite-(Y)
Y
 
4
Al(SiO
 
4
)
 
2
(OH)
 
2
F
 
5
9.AG.55Chantalite
CaAl
 
2
[(OH)
 
4
|SiO
 
4
]
9.AG.60Mozartite
CaMn
3+
 
[OH|SiO
 
4
]
9.AG.60Vuagnatite
CaAl[OH|SiO
 
4
]
9.AG.65Hatrurite
Ca
 
3
[O|SiO
 
4
]
9.AG.70Jasmundite
Ca
 
11
[O
 
2
|S|(SiO
 
4
)
 
4
]
9.AG.75Afwillite
Ca
 
3
[HSiO
 
4
]
 
2
 · 2H
 
2
O
9.AG.80Bultfonteinite
Ca
 
2
[F|HSiO
 
4
] · H
 
2
O
9.AG.85Zoltaiite
BaV
4+
2
V
3+
12
Si
 
2
O
 
27
9.AG.90Tranquillityite
(Fe
2+
 
,Ca)
 
8
(Zr,Y)
 
2
Ti
 
3
[O
 
4
|SiO
 
4
]
 
3

Other Names for Vanadomalayaite

Synonyms:
IMA1993-032
German names:
Vanadomalayait
Russian names:
Ванадомалаяит
Spanish names:
Vanadomalayaita

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 Vanadomalayaite

Reference List:Neues Jahrbuch für Mineralogie, Monatshefte (1994): 489-498.

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

Internet Links for Vanadomalayaite

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    Localities for Vanadomalayaite

    (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.
    Italy
     
    • Liguria
      • Genova Province
        • Ne
          • Graveglia Valley
            • Reppia
    		[NJMM,489-498 (1994); Rivista Mineralogica Italiana, volume 3, pp. 265-266 (1995); MinRec 32:355]
    Mineral and/or Locality
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