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Mixed Minerals

Friday, 14 April 2017 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including kovdorskite, lazulite, ruifrancoite, zanazziite, and zavaliaite and more from places like Iron mine, Kovdor Massif, Kola Peninsula, Russia, Rapid Creek, Yukon Territory, Canada, Sapucaia mine, Galileia, Doce valley, Minas Gerais, Brazil, Itinga, Minas Gerais, Brazil, and La Empleada Pegmatite, Coronel Pringles, San Luis, Argentina Coronel Pringles, San Luis, Argentina.

Kovdorskite

#BN46757
Locality
Iron mine, Kovdor Massif, Kola Peninsula, Russia 
Formula
Mg2PO4(OH)·3H2
Availability
Available
Price
$75.00
Size
2.5 x 3 x 2 cm - Thumbnail 
Tagged
phosphate , pegmatite mineral  
Special Info
Type & Only Locality 

Blue, glassy crystal grains from 5-11mm. Kovdorskite is a very rare mineral found at this locality only where it occurs in an explosive breccia pipe intruded through an iron deposit. Note labels.


Kovdorskite

Formula
Mg2PO4(OH)·3H2
Crystal System
Monoclinic 
Cleavage
None, None, None 
Color
colorless, greenish blue, light pink, pink 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal - Uneven 
Hardness
Collection
Dr. Buford L. Nichols Collection
Special Info
Type & Only Locality

Lazulite

#36321
Locality
Rapid Creek, Yukon Territory, Canada 
Formula
MgAl2(PO4)2(OH)2 
Availability
Available
Price
$1,950.00
Size
6 x 3 x 3 cm - Sm Cabinet 
Tagged
phosphate  

A superb Lazulite with very lustrous and deep blue with parts showing a good green color. The crystals are huge for the species, the largest eing 1.2cm! This is an excellent piece, very showy for this a rare phosphate mineral.


Lazulite

Formula
MgAl2(PO4)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Massive - Granular, Pyramidal 
Cleavage
Indistinct, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
blue, blue green, light blue, black blue 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
5-6 
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Ruifrancoite

with Meurigite - #BN46748
Locality
Sapucaia mine, Galileia, Doce valley, Minas Gerais, Brazil 
Formula
Ca22Fe3+4Be4(PO4)6(OH)6·4H2
Availability
Available
Price
$95.00
Size
4 x 3 x 2 cm - Miniature 
Tagged
phosphate , beryllium , pegmatite mineral  
Special Info
Type Locality 

Brownish red spherical crystal groups to about 0.75mm. There are also yellowish green fuzzy, spherical Meurigite crystals on top of the Ruifrancoite. The matrix is cleavelandite Albite. There are only two localities where Ruifrancoite is found. This is the type locality.


Ruifrancoite

Formula
Ca2[ ]2Fe3+4Be4(PO4)6(OH)6·4H2
Crystal System
Monoclinic 
Crystal Habit
Acicular, Lath, Botryoidal 
Cleavage
Perfect, Good, None 
Color
reddish brown 
Streak
orange brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4.5 
Collection
Dr. Buford L. Nichols Collection
Special Info
Type Locality

Zanazziite

with Eosphorite - #BN46742
Locality
Itinga, Minas Gerais, Brazil 
Formula
Ca2Mg5Be4(PO4)6(OH)4·6H2
Availability
Available
Price
$40.00
Size
3.5 x 3.5 x 1.5 cm - Miniature 
Tagged
phosphate , beryllium , pegmatite mineral  

Green rosettes of the rare Roscherite group mineral called Zanazziite with bladed brown Eosphorite on Microcline. Originally from Carlos Barbosa with tag.


Zanazziite

Formula
Ca2Mg5Be4(PO4)6(OH)4·6H2
Crystal System
Monoclinic 
Crystal Habit
Bladed, Prismatic, Columnar 
Cleavage
Good, Distinct, None 
Luster
Vitreous - Pearly 
Color
pale olive green, dark olive green 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
Collection
Dr. Buford L. Nichols Collection

Zavaliaite

in Lithiophilite - #BN46749
Locality
La Empleada Pegmatite, Coronel Pringles, San Luis, Argentina Coronel Pringles, San Luis, Argentina 
Formula
(Mn2+,Fe2+,Mg)3(PO4)2 
Availability
Available
Price
$50.00
Size
2 x 2 x 1.5 cm - Thumbnail 
Tagged
phosphate , pegmatite mineral  
Special Info
Type & Only Locality 

Microscopic (<0.1mm) thin exsolution lamellae in Lithiophilite. A relatively new phosphate mineral of the Sarcopside group. Type and only locality.


Zavaliaite

Collection
Dr. Buford L. Nichols Collection
Special Info
Type & Only Locality

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