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Mixed Minerals

Sunday, 08 September 2019 08:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including strashimirite, strengite, tetrahedrite, titantaramellite, vesuvianite, and wardite and more from places like San Rafael mine, Nye Co., Nevada, United States, Leveäniemi Iron mine, Svappavaara, Lappland, Sweden, Casapalca, Lima Dept., Peru, Big Creek, Fresno Co., California, United States, Sierra de Cruces, Coahuila, Mexico, and Rapid Creek, Yukon Territory, Canada.

Strashimirite

with Cornwallite - #22537
Locality
San Rafael mine, Nye Co., Nevada, United States 
Formula
Cu4(AsO4)2(OH)2·2.5H2
Availability
Sold
Size
4.5 x 3.5 x 3 cm - Miniature 
Tagged
arsenate , copper  

Light green spheroidal clusters of acicular Strashimirite with darker green bead-like Cornwallite.


Strashimirite

Formula
Cu4(AsO4)2(OH)2·2.5H2
Crystal System
Monoclinic 
Crystal Habit
Euhedral Crystals, Fibrous, Encrustations 
Luster
Greasy (Oily) 
Color
white, green 
Streak
pale green 
Class
Monoclinic 
Fracture
Uneven 
Hardness
2.5-3 

Strengite

with Beraunite - #43731
Locality
Leveäniemi Iron mine, Svappavaara, Lappland, Sweden 
Formula
Fe3+PO4·2H2
Availability
Sold
Size
9 x 4.5 x 5 cm - Sm Cabinet 
Tagged
phosphate  

Light purple crystal clusters from 1 to 5mm in iron ore pocket with dark green Beraunite on iron ore matrix.


Strengite

Formula
Fe3+PO4·2H2
Crystal System
Orthorhombic 
Crystal Habit
Spherical, Radial, Botryoidal 
Cleavage
Good, Poor, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale violet, deep violet, red, carmine red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 
Collection
Shultz Collection
Mineralpedia
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Tetrahedrite

#36275
Locality
Casapalca, Lima Dept., Peru 
Formula
Cu12Sb4S13 
Availability
Sold
Size
5 x 2.5 x 2.5 cm - Miniature 
Tagged
sulfide , copper  

A single well formed Tetrahedrite crystal to 1cm with mirror-like refelctions on needle Quartz with Pyrite.  Four other Tetrahedrite crystals can also be seen.


Tetrahedrite

Formula
Cu12Sb4S13 
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Massive 
Cleavage
None, None, None 
Luster
Metallic 
Color
iron gray, black, steel gray 
Streak
black 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
3.5-4 

Titantaramellite

with Gillespite & Pellyite - #40029
Locality
Big Creek, Fresno Co., California, United States 
Formula
Ba4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx 
Availability
Sold
Size
5 x 3 x 2 cm - Miniature 

1mm or less Titantaramellite as lathe-like crystals with sparse coverage within a matrix of red Gillespite, light greenish-white Sanbornite.  Associated with minor Pellyite.  Carries a John Metteer of The Mineral Mailbox label.


Titantaramellite

Formula
Ba4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Anhedral Grains 
Cleavage
Perfect, None, None 
Color
bronze brown, purple red 
Class
Orthorhombic - Dipyramidal 
Hardness
5.5-6 

Vesuvianite

#BM41907
Locality
Sierra de Cruces, Coahuila, Mexico 
Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Availability
Available
Price
$45.00
Size
6 x 7 x 4 cm - Sm Cabinet 

Three large Vesuviante crystals to 1.5cm with good luster etched out of Calcite matrix.  There are several other minor Vesuviate crystals all about matrix.


Vesuvianite

Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Crystal System
Tetragonal 
Crystal Habit
Massive, Columnar, Granular 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
blue, brown, green, yellow, white 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
6.5 
Collection
Bill McConlogue Collection

Wardite

with Siderite - #BM41910
Locality
Rapid Creek, Yukon Territory, Canada 
Formula
NaAl3(PO4)2(OH)4·2H2
Availability
Sold
Size
5 x 3.5 x 3.5 cm - Miniature 
Tagged
phosphate  

Stunning well formed greenish-blue Wardite crystals to 4mm associated with light yellow to brown transluscent Siderite crystals to 5mm.  Rapid Creek has produced some of the world's finest Wardite crystals.


Wardite

Formula
NaAl3(PO4)2(OH)4·2H2
Crystal System
Tetragonal 
Crystal Habit
Encrustations, Radial, Fibrous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
blue green, colorless, white, light green 
Streak
white 
Class
Tetragonal - Trapezohedral 
Hardness
Collection
McConlogue Collection
Mineralpedia
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Previously Sold Wardite
On Dakota Matrix
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