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Mixed Minerals

Friday, 06 October 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 bornite, farringtonite, fluorapatite, strengite, strunzite, and thomasclarkite-(y) and more from places like Leonard mine, Butte dist., Silver Bow Co., Montana, United States, Springwater meteorite, Springwater, Saskatchewan, Canada, Palermo mine, Groton, Grafton Co., New Hampshire, United States, Sapucaia mine, Galileia, Doce valley, Minas Gerais, Brazil, Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany, and Mont Saint-Hilaire, Rouville Co., Quebec, Canada.

Bornite

with Pyrite & Quartz - #RW47581
Locality
Leonard mine, Butte dist., Silver Bow Co., Montana, United States 
Formula
Cu5FeS4 
Availability
Sold
Size
15 x 7 x 3.5 cm - Cabinet 
Tagged
sulfide , copper  

A plate full of dark bluish to almost black virtually formless crystal masses of Bronite with Pyrite and Quartz. Like the Comstock and the Homestake mines, specimens are scarce from Butte. 


Bornite

Formula
Cu5FeS4 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Reniform, Granular 
Cleavage
Imperfect, None, None 
Luster
Metallic 
Color
copper red, bronze brown, purple 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
Collection
Robert Waidler Collection
Mineralpedia
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Previously Sold Bornite
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Farringtonite

#BN47639
Locality
Springwater meteorite, Springwater, Saskatchewan, Canada 
Formula
Mg3(PO4)2 
Availability
Available
Price
$195.00
Size
Micromount 
Tagged
phosphate  

Supporting EDS papers from Excalibur minerals. It is a small expoxy mount with a tiny microscopic sliver.


Farringtonite

Formula
Mg3(PO4)2 
Crystal System
Monoclinic 
Cleavage
Good, Good, None 
Color
white, wax yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
Dr. Buford Nichols Collection

Fluorapatite

#BN47621
Locality
Palermo mine, Groton, Grafton Co., New Hampshire, United States 
Formula
Ca5(PO4)3
Availability
Available
Price
$65.00
Size
6 x 3.5 x 2.5 cm - Sm Cabinet 
Tagged
phosphate , pegmatite mineral  

An interesting white Fluorapatite with individual crystals from 4 to 6mm in branch-like formations. 


Fluorapatite

Formula
Ca5(PO4)3
Crystal System
Hexagonal 
Crystal Habit
Massive - Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Resinous 
Color
blue, brown, colorless, violet, green 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Dr. Buford Nichols Collection

Strengite

with Frondelite - #BN47615
Locality
Sapucaia mine, Galileia, Doce valley, Minas Gerais, Brazil 
Formula
Fe3+PO4·2H2
Availability
Available
Price
$95.00
Size
10 x 9 x 7 cm - Cabinet 
Tagged
phosphate , pegmatite mineral  

An altered phosphate nodule hollowed out and replaced by bright, rich purple Strengite. The matrix was replaced by by dark brown compact fibrous Rockbridgeite. Mined in 1972. Ex. Luiz Menezes,


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
Dr. Buford Nichols Collection
Mineralpedia
View Strengite
On Dakota Matrix
Previously Sold Strengite
On Dakota Matrix
Other Available Strengite
WebMineral
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Mindat
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Strunzite

with Rockbridgeite - #BN47608
Locality
Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany 
Formula
Mn2+Fe3+2(PO4)2(OH)2·6H2
Availability
Available
Price
$40.00
Size
4 x 3 x 2.5 cm - Miniature 
Tagged
phosphate , pegmatite mineral  

Golden shiny fibrous Strunzite crystals in decayed phosphate vug. The strands are about 5mm.


Strunzite

Formula
Mn2+Fe3+2(PO4)2(OH)2·6H2
Crystal System
Triclinic 
Crystal Habit
Acicular, Lath 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
brownish yellow, golden yellow, straw yellow 
Streak
light yellow 
Class
Triclinic - Pinacoidal 
Hardness
Collection
Dr. Buford Nichols Collection
Mineralpedia
View Strunzite
On Dakota Matrix
Previously Sold Strunzite
On Dakota Matrix
Other Available Strunzite
WebMineral
View Strunzite
Mindat
View Strunzite

Thomasclarkite-(Y)

#47590
Locality
Mont Saint-Hilaire, Rouville Co., Quebec, Canada 
Formula
NaY(HCO3)(OH)3·4H2
Availability
Available
Price
$45.00
Size
Chip < 1cm 
Tagged
carbonate , REE mineral  
Special Info
Type Locality 

Tiny cubic hony yellow crystals to about 0.75mm with unknown large orange crystals.


Thomasclarkite-(Y)

Formula
NaY(HCO3)(OH)3·4H2
Crystal System
Monoclinic 
Crystal Habit
Pseudo Tetragonal 
Cleavage
Perfect, Parting, None 
Luster
Vitreous (Glassy) 
Color
white, yellow 
Streak
white 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle - Uneven 
Hardness
2-3 
Special Info
Type Locality

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