UM1996-41-SiO:CCaCeFFeNbPbThTiU
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Formula:
~(Ce,Ca,K,Na,Ba)Pb2(Fe,Al,Mn,Zn)(Nb,Ti,Zr,Th,U)5(SiO2)6(CO2)9(F,OH,O)
the Si and C representations in the formula are likely erroneous or stand for some kind of a simplification; possibly a silico-carbonate
Co-described with UM1996-40-SiO:BaFFeHKNaTi.
Probably metamict, optically resembling a pyrochlore group species; an inclusion in perthite, ~ 20 x 25 microns in size.
With quartz, fluorite, pyrochlore, feldspars; a Li-bearing mineral (polylithionite or neptunite); and yet another unnamed species (included in narsarsukite) not reported by Smith & Nickel (2007/2012).
Electron microprobe data (wt.%):
Na2O 0.06
K2O 0.13
CaO 0.74
MnO 0.15
ZnO 0.08
FeO 3.17
BaO 0.24
PbO 15.49
Ce2O3 2.46
TiO2 6.52
UO2 1.5
ThO2 3.70
ZrO2 4.00
SnO2 0.07
Nb2O5 19.44
Al2O3 0.32
SiO2 19.15
F 0.42
O=F 0.18
total 77.47
Second unnamed species:
Na2O 0.37–6.86
K2O 0.05–1.39
ZnO 0.01–0.07
CaO 1.37–3.96
BaO 0.08–0.23
MgO 0–0.01
MnO 0–0.07
FeO 0.70–2.56
Y2O3 0–1.79
Ce2O3 0.16–0.74
Nb2O5 0.39–1.10
SnO2 0.12–0.29
TiO2 5.42–9.30
ZrO2 8.47–16.39
Al2O3 0.24–0.88
SiO2 48.07–59.41
F 0.01–1.04
O=F 0–0.44
total 75.42–90.79 (H2O may be present)
CO2 (if present) 22.53
Probably metamict, optically resembling a pyrochlore group species; an inclusion in perthite, ~ 20 x 25 microns in size.
With quartz, fluorite, pyrochlore, feldspars; a Li-bearing mineral (polylithionite or neptunite); and yet another unnamed species (included in narsarsukite) not reported by Smith & Nickel (2007/2012).
Electron microprobe data (wt.%):
Na2O 0.06
K2O 0.13
CaO 0.74
MnO 0.15
ZnO 0.08
FeO 3.17
BaO 0.24
PbO 15.49
Ce2O3 2.46
TiO2 6.52
UO2 1.5
ThO2 3.70
ZrO2 4.00
SnO2 0.07
Nb2O5 19.44
Al2O3 0.32
SiO2 19.15
F 0.42
O=F 0.18
total 77.47
Second unnamed species:
Na2O 0.37–6.86
K2O 0.05–1.39
ZnO 0.01–0.07
CaO 1.37–3.96
BaO 0.08–0.23
MgO 0–0.01
MnO 0–0.07
FeO 0.70–2.56
Y2O3 0–1.79
Ce2O3 0.16–0.74
Nb2O5 0.39–1.10
SnO2 0.12–0.29
TiO2 5.42–9.30
ZrO2 8.47–16.39
Al2O3 0.24–0.88
SiO2 48.07–59.41
F 0.01–1.04
O=F 0–0.44
total 75.42–90.79 (H2O may be present)
CO2 (if present) 22.53
Unique Identifiers
Mindat ID:
54075
Long-form identifier:
mindat:1:1:54075:3
Chemistry of UM1996-41-SiO:CCaCeFFeNbPbThTiU
Mindat Formula:
~(Ce,Ca,K,Na,Ba)Pb2(Fe,Al,Mn,Zn)(Nb,Ti,Zr,Th,U)5(SiO2)6(CO2)9(F,OH,O)
the Si and C representations in the formula are likely erroneous or stand for some kind of a simplification; possibly a silico-carbonate
the Si and C representations in the formula are likely erroneous or stand for some kind of a simplification; possibly a silico-carbonate
Element Weights:
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.
Internet Links for UM1996-41-SiO:CCaCeFFeNbPbThTiU
mindat.org URL:
https://www.mindat.org/min-54075.html
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References for UM1996-41-SiO:CCaCeFFeNbPbThTiU
Localities for UM1996-41-SiO:CCaCeFFeNbPbThTiU
Showing 1 localities.
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(TL) - Type Locality for a valid mineral species.
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All localities listed without proper references should be considered as questionable.
Canada | |
| Birkett et al. (1996) +1 other reference |
