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Fergusonite-(Y) & Pyrochlore

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CR593646

Fergusonite-(Y) & Pyrochlore

Description Tabs

Description
Locality: 
Mount Malosa, Zomba, Southern Region, Malawi
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
13 × 5.3 × 3.5 cm
Description

Several groups of cream-colored fergusonite-y crystals sitting on feldspar-aegirine matrix.

With numerous small brown pyrochlore crystals and yellow brown zircon crystals.

Very good and rich old time specimen.

Mineral Data
What's on the rock

Fergusonite-(Y)

Formula: 
YNbO4
Strunz: 
7.GA.05
Hardness: 
5.5 - 6.5
Type Locality: 
Kangeq, Sermersoq Island, Kujalleq, Greenland

Pyrochlore

Synonym Of: 

Pyrochlore Group

Formula: 
A2Nb2(O,OH)6Z
Strunz: 
4
Hardness: 
5 - 5.5
Group Parent: 
Pyrochlore Group