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1 item @ $125.00  

Mixed Minerals

Friday, 13 August 2021 10:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including malayaite, and metavivianite and more from places like Ash Mountain, Tuya Range, British Columbia, Canada, and Anloua, Martap, Vina, Adamawa, Cameroon.

Malayaite

#52663
Locality
Ash Mountain, Tuya Range, British Columbia, Canada 
Formula
CaSnO(SiO4
Availability
Available
Price
$475.00
Size
5.5 x 4 x 3 cm - Sm Cabinet 
Tagged
tin  
Special Info
XRD Confirmed 

This is one of the best Malayites out there. Infact it was photographed in the Mineralogical Record of Feb. 1992. Malayite is the tin analogue of Titanite, and is relatively rare. The crystals are a little over 2cm and there are two of them.


Malayaite

Formula
CaSnO(SiO4
Crystal System
Monoclinic 
Crystal Habit
Wedge shaped, Massive 
Luster
Vitreous (Glassy) 
Color
colorless, greenish gray, white, light yellow, orange 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
3.5-4 
Collection
Barbara Cureton Collection
Special Info
XRD Confirmed

Metavivianite

#BN56342
Locality
Anloua, Martap, Vina, Adamawa, Cameroon 
Formula
(Fe2+,Fe3+)3(PO4)2(OH)2·6H2
Availability
Available
Price
$30.00
Size
3 x 2 x 0.7 cm - Thumbnail 

It's kind of a crumbly specimen since the mineral occurs in very thin platy crystals. The color is really a dark green like the first photo. The second accidentally caught the reflections of my lights.


Metavivianite

Formula
(Fe2+,Fe3+)3(PO4)2(OH)2·6H2
Crystal System
Triclinic 
Crystal Habit
Prismatic, Striated 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
leek green, gray green, reddish brown 
Streak
yellowish brown 
Class
Triclinic 
Hardness
1.5-2 
Collection
Dr. Buford Nichols Collection

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