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Hydropyrochlore - Lueshe Mine, Kivu, Democratic Republic of Congo (Zaïre),TYPE LOCALITY
(#:MINS7524)
Intergrown crystals of Hydropyrochlore (kalipyrochlore) from the type locality measuring 7x6x8mm.
Formula :
A
2
Nb
2
(O,OH)
6
Z
System:
cubic
Hardness:
4-4½
Rarity:
rare
Strunz id:IV/C.17-10 - OXIDES and HYDROXIDES
Name origin:
The pyrochlore group gets its name from the generic name pyrochlore which was first introduced by J. J. Berzelius for a cubic mineral found by N.O. Tank in the 1820s in a syenite pegmatite at Stavern (formerly Fredriksvärn), Norway (Wöhler 1826). It is derived from the Greek πΰρ, fire, and χλωρός, green in allusion to the fact that the mineral usually turns green on ignition.
Specimen weight:3 gr.
Crystal size:8 mm tall
Overall size: 7mm x 6 mm x 8 mm
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