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Mixed Minerals

Sunday, 15 November 2020 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including beudantite, eosphorite, hematite, tennantite, and willemite and more from places like Mina Ojuela, Mapimi, Durango, Mexico, Taquaral, Itinga, Minas Gerais, Brazil, Florence mine, Egremont, Cumbria, England, Mine Ledge, Surry, Cheshire Co., New Hampshire, United States, Tsumeb mine, Tsumeb, Namibia.

Beudantite

#54557
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
PbFe3+3(AsO4)(SO4)(OH)6 
Availability
Available
Price
$35.00
Size
2.5 x 1.5 x 1 cm - Thumbnail 
Tagged
arsenate  

Micro greenish-yellow crystals.


Beudantite

Formula
PbFe3+3(AsO4)(SO4)(OH)6 
Crystal System
Trigonal 
Crystal Habit
Blocky - Rhombohedral, Druse, Platy 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
brown, green, yellow, dark green, orange 
Streak
greenish yellow 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle 
Hardness

Eosphorite

on Quartz - #48007
Locality
Taquaral, Itinga, Minas Gerais, Brazil 
Formula
Mn2+AlPO4(OH)2·H2
Availability
Available
Price
$60.00
Size
5 x 3.5 x 3 cm - Miniature 
Tagged
phosphate , pegmatite mineral  

1 to 3mm Eosphorite crystals with thick coverage on Quartz.


Eosphorite

Formula
Mn2+AlPO4(OH)2·H2
Crystal System
Orthorhombic 
Crystal Habit
Massive - Fibrous, Prismatic, Striated 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Resinous 
Color
light pink, yellow brown, light brown, light yellow, colorless 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal - Uneven 
Hardness
Collection
Dr. Buford Nichols Collection

Hematite

with Quartz - #54522
Locality
Florence mine, Egremont, Cumbria, England 
Formula
Fe2O3 
Availability
Available
Price
$150.00
Size
10 x 7 x 4.5 cm - Cabinet 

Classic locality. Colorless Quartz crystals to 1.2cm on shiny specular Hematite.


Hematite

Formula
Fe2O3 
Crystal System
Trigonal 
Crystal Habit
Tabular, Blocky, Earthy 
Cleavage
None, None, None 
Luster
Metallic 
Color
reddish gray, black, blackish red 
Streak
reddish brown 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Conchoidal 
Hardness
6.5 
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Hematite

#AH54533
Locality
Mine Ledge, Surry, Cheshire Co., New Hampshire, United States 
Formula
Fe2O3 
Availability
Available
Price
$50.00
Size
9 x 8 x 5 cm - Sm Cabinet 

Botryoidal reddish brown Hematite.


Hematite

Formula
Fe2O3 
Crystal System
Trigonal 
Crystal Habit
Tabular, Blocky, Earthy 
Cleavage
None, None, None 
Luster
Metallic 
Color
reddish gray, black, blackish red 
Streak
reddish brown 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Conchoidal 
Hardness
6.5 
Collection
Arnold G Hampson Collection
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Tennantite

#PD54425
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
Cu12As4S13 
Availability
Available
Price
$50.00
Size
3 x 2 x 2 cm - Thumbnail 
Tagged
sulfide , copper  

An interesting Tetrahedrite crystal crusted over with iron-oxides.


Tennantite

Formula
Cu12As4S13 
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Massive, Disseminated 
Cleavage
None, None, None 
Luster
Metallic 
Color
steel gray, black 
Streak
reddish gray 
Class
Isometric - Hextetrahedral 
Fracture
Hackly 
Hardness
3.5-4 
Collection
Don Phillips Collection

Willemite

#PD54427
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
Zn2SiO4 
Availability
Available
Price
$65.00
Size
8 x 5.5 x 2.5 cm - Sm Cabinet 

White to colorless Willemite crystals covering both sides of matrix.


Willemite

Formula
Zn2SiO4 
Crystal System
Trigonal 
Crystal Habit
Prismatic, Massive - Granular, Massive 
Cleavage
Poor, Poor, None 
Luster
Vitreous - Resinous 
Color
white, yellow, green, reddish brown, black 
Streak
white 
Class
Trigonal - Rhombohedral 
Fracture
Uneven 
Hardness
5.5 
Collection
Don Phillips Collection
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