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Rare & Mixed Minerals

Sunday, 31 July 2022 05:00 PM

Introducing the "Rare & Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including lepidolite, minium, mooreite, sulvanite, topaz, and vanadinite and more from places like Harding mine, Taos Co., New Mexico, United States, Flux mine, Patagonia, Santa Cruz Co., Arizona, United States, Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States, Edelweiss mine, Burra, Mt Lofty Ranges, South Australia, Australia, Ouro Preto, Minas Gerais, Brazil, and Mammoth mine, Tiger, Pinal Co., Arizona, United States.

Lepidolite

with Spodumene - #AH58896
Locality
Harding mine, Taos Co., New Mexico, United States 
Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Availability
Available
Price
$55.00
Size
7.5 x 5 x 5 cm - Sm Cabinet 

Bold purple Lepidolite associated with another lithium mineral, Spodumene.


Lepidolite

Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Crystal System
Monoclinic 
Crystal Habit
Platy, Foliated, Massive 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless, gray white, lilac, yellowish, white 
Streak
white 
Class
Monoclinic 
Fracture
Uneven 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection

Minium

#RS58913
Locality
Flux mine, Patagonia, Santa Cruz Co., Arizona, United States 
Formula
Pb2+2Pb4+O4 
Availability
Sold
Size
2.5 x 2 x 1.5 cm - Thumbnail 

A total mass of deep orange Minium.


Minium

Formula
Pb2+2Pb4+O4 
Crystal System
Tetragonal 
Crystal Habit
Scaly, Massive - Granular, Striated 
Cleavage
Perfect, Perfect, None 
Luster
Adamantine 
Color
light red, brownish red, vivid red, yellowish red 
Streak
yellowish orange 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Earthy 
Hardness
2.5-3 
Collection
RC Stamberg Collection
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Mooreite

#RS58925
Locality
Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States 
Formula
Mg15(SO4)2(OH)26·8H2
Availability
Sold
Size
6 x 3 x 2 cm - Sm Cabinet 
Special Info
Type Locality 

Pearly tan plates with a nice luster from 1 to 2cm. A very good piece from the type locality for this two-locality mineral.


Mooreite

Formula
Mg15(SO4)2(OH)26·8H2
Crystal System
Monoclinic 
Crystal Habit
Tabular, Platy 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
RC Stamberg Collection
Special Info
Type Locality
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Sulvanite

#RS58921
Locality
Edelweiss mine, Burra, Mt Lofty Ranges, South Australia, Australia 
Formula
Cu3VS4 
Availability
Sold
Size
4.5 x 3 x 3 cm - Miniature 
Tagged
copper , vanadium  

A 7mm greyish to brassy mass with alterations to perhaps Vesigneite (greenish yellow).


Sulvanite

Formula
Cu3VS4 
Crystal System
Isometric 
Crystal Habit
Massive, Crystalline - Coarse 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
bronze, steel gray 
Streak
black 
Class
Isometric - Hextetrahedral 
Hardness
3.5 
Collection
RC Stamberg Collection
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Topaz

(imperial) - #RS58911
Locality
Ouro Preto, Minas Gerais, Brazil 
Formula
Al2SiO4F2 
Availability
Sold
Size
2.5 x 1.1 x 0.7 cm - Thumbnail 

An excellent, terminated imperial Topaz crystal. Slight knick on the termination.


Topaz

Formula
Al2SiO4F2 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Coarse, Prismatic, Massive - Granular 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale blue, yellow, yellowish brown, red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
Collection
RC Stamberg Collection
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Vanadinite

with Baryte - #AH58910
Locality
Mammoth mine, Tiger, Pinal Co., Arizona, United States 
Formula
Pb5(VO4)3Cl 
Availability
Available
Price
$55.00
Size
7 x 3 x 5 cm - Sm Cabinet 
Tagged
vanadium  

Tiny reddish orange prismatic crystals with hexagonal terminations to about 0.75mm with colorless and tabular Baryte crystals. The Vanadinite is somewhat color zoned. The last few photos are that of the Baryte. This is an interesting specimen of dissolved Galena which created the vugs to which the crystals have formed. There is also a green micaceous mineral, which is much like Sericite.


Vanadinite

Formula
Pb5(VO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Globular, Prismatic, Nodular 
Cleavage
None, None, None 
Luster
Adamantine 
Color
brown, brownish yellow, brown red, colorless, yellow 
Streak
brownish yellow 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection

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