UM2001-09-O:CaNbREESiTiY (original) (raw)
Valid as an unnamed mineral
Formula:
(Ca,Y,REE)(Ti,Nb,Si)2(O,OH)6
(Supposed) Ti analogue of vigezzite.
One of few 50–300-μm-sized grains of AB2O6-type oxides described.
Co-described with (then unknown) nioboaeschynite-(Y).
This vigezzite-like mineral has the following EPMA data [wt.%]:
CaO 5.29
FeO 0.69
Fe2O3 0.76 (assuming 50% partitioning)
UO2 3.49
ThO2 4.27
Y2O3 5.87
Ce2O3 2.31
Nd2O3 3.71
Gd2O3 1.09
Dy2O3 2.76
Ho2O3 0.78
Er2O3 1.20
Yb2O3 0.93
Nb2O5 28.25
Ta2O5 4.08
TiO2 19.60
WO3 0.92
SiO2 3.93
total 89.93
This corresponds to (Ca0.36Y0.20Th0.06U0.05Fe2+0.04REE0.28)Σ0.99(Ti0.94Nb0.81Si0.25Ta0.07Fe3+0.04W0.02)Σ2.13O6.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:54296:4
ec4d8915-64bd-4bba-876d-41c809dd6d8c
IMA Classification of UM2001-09-O:CaNbREESiTiYHide
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IMA status notes:
Unnamed (probably valid)
Chemistry of UM2001-09-O:CaNbREESiTiYHide
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Mindat Formula:
(Ca,Y,REE)(Ti,Nb,Si)2(O,OH)6
Relationship of UM2001-09-O:CaNbREESiTiY to other SpeciesHide
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Other Members of this group:
| Aeschynite-(Ce) | (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m n a |
|---|---|---|
| Aeschynite-(Nd) | (Nd,Ln,Ca)(Ti,Nb)2(O,OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| Aeschynite-(Y) | (Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m n a |
| Nioboaeschynite-(Ce) | (Ce,Ca)(Nb,Ti)2(O,OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| Nioboaeschynite-(Nd) | (Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6 | Orth. |
| Nioboaeschynite-(Y) | (Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a n |
| Rynersonite | CaTa2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| Tantalaeschynite-(Y) | Y(Ta,Ti,Nb)2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| Vigezzite | (Ca,Ce)(Nb,Ta,Ti)2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for UM2001-09-O:CaNbREESiTiYHide
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References for UM2001-09-O:CaNbREESiTiYHide
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Localities for UM2001-09-O:CaNbREESiTiYHide
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ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| Italy | |
|---|---|
| Piedmont Verbano-Cusio-Ossola Province ⓘ Baveno | Aurisicchio et al. (2001) +1 other reference |