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RM3675   Betafite (of Hogarth 1977), pyrochlore supergroup

Group of betafite crystals showing defined octahedral faces (triangular), with axial growth. Very interesting for its crystallography and species. An oldie, classic and representative for the species. Although the term betafite was discredited in 2010, many of us still are using this term to define this mineral when we see it. Our specimen is an uranium, calcium, titanium and niobium/tantalum oxide with radioactive activity. Currently the betafite is included as a variety within the pyrochlore supergroup. As a note, the rich uranium term has been only found in the Moon (oxyuranobetafite).

Size: 2.8 x 2.2 x 1.7 cm.
Presents radioactive activity ☢.
140 €
RM3665   Betafite (of Hogarth 1977), pyrochlore supergroup

A huge size crystal of betafite showing defined octahedral faces (triangular) and developed dodecahedral ones. Very interesting for its crystallography and species. An oldie, classic and representative for the species.
Although the term betafite was discredited in 2010, many of us still are using this term to define this mineral when we see it. Our specimen is an uranium, calcium, titanium and niobium/tantalum oxide with radioactive activity. Currently the betafite is included as a variety within the pyrochlore supergroup. As a note, the rich uranium term has been only found in the Moon (oxyuranobetafite).

Size: 3.5 x 2.9 x 1.6 cm.
Presents radioactive activity ☢.
220 €
RM3599   Betafite (of Hogarth 1977), pyrochlore supergroup

ATTENTION: This sample will only be sent to buyers within the Iberian Peninsula or collect personally.

Size: 6.3 x 5 x 4 cm.
Found in ±1995.
Presents radioactive activity ☢.
Sold
RM2795   Betafite (of Hogarth 1977), pyrochlore supergroup

A huge size crystal of betafite showing defined octahedral faces (triangular) and developed dodecahedral ones. Very interesting for its crystallography and species. An oldie, classic and representative for the species.
Although the term betafite was discredited in 2010, many of us still are using this term to define this mineral when we see it. Our specimen is an uranium, calcium, titanium and niobium/tantalum oxide with radioactive activity. Currently the betafite is included as a variety within the pyrochlore supergroup. As a note, the rich uranium term has been only found in the Moon (oxyuranobetafite).

Size: 4.8 x 4.4 x 4.1 cm.
Found in ±1995.
Presents radioactive activity ☢.
Sold
RM593   Betafite (of Hogarth 1977), pyrochlore supergroup

A huge size crystal of betafite showing defined octahedral faces (triangular) and developed dodecahedral ones. Very interesting for its crystallography and species. An oldie, classic and representative for the species. This specimen belonged to the collection of P. Sainfeld, mineralogist at the École des Mines de Paris.
Although the term betafite was discredited in 2010, many of us still are using this term to define this mineral when we see it. Our specimen is an uranium, calcium, titanium and niobium/tantalum oxide with radioactive activity. Currently the betafite is included as a variety within the pyrochlore supergroup. As a note, the rich uranium term has been only found in the Moon (oxyuranobetafite).

Size: 5,6 x 4,0 x 3,6 cm.
Found in 1960's.
Ex-col. Sainfeld (École Mines Paris).
Presents radioactive activity ☢.
Sold