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0 item @ $0.00  

Mixed Minerals

Friday, 17 March 2017 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including herderite and more from places like Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Brazil.

Herderite

on Microcline - #BN46619
Locality
Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Brazil 
Formula
CaBePO4
Availability
Available
Price
$125.00
Size
11 x 6 x 6 cm - Cabinet 
Tagged
phosphate , beryllium , pegmatite mineral  

The specimen was acquired by Nichols in 1976. It is a large specimen of mostly white to light pink Microcline with yellow brown large crystals of Herderite to over 1.5cm. The Microcline appears to have been etched and brecciated by remaining fluid of the pegmatite or later hydrothermal fluids which have deposited the Herderite. Most of the Herderite are twinned. As Mindat notes, most Herderites may be Hydroxylherderite, not much of a difference however.


Herderite

Formula
CaBePO4
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, greenish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Sub Conchoidal 
Hardness
Collection
Dr. Buford L. Nichols Collection
Mineralpedia
View Herderite
On Dakota Matrix
Previously Sold Herderite
On Dakota Matrix
Other Available Herderite
WebMineral
View Herderite
Mindat
View Herderite

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