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Mixed Minerals

Friday, 30 August 2019 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including brochantite, cerussite, høgtuvaite, nifontovite, and parisite-(ce) and more from places like Metcalf mine, Greenlee Co., Arizona, United States, Tsumeb mine, Tsumeb, Namibia, Hogtuva, Rana, Nordland, Norway, Mina Rey y Reina, Charcas, San Luis Potosi, Mexico, and Snowbird mine, Lola Pass, Mineral Co., Montana, United States.

Brochantite

#RW51179
Locality
Metcalf mine, Greenlee Co., Arizona, United States 
Formula
Cu4SO4(OH)6 
Availability
Available
Price
$175.00
Size
9 x 4.5 x 2.5 cm - Sm Cabinet 
Tagged
copper  

Exceptional emerald green prismatic and large Brochantite prismatic crystals to 2.5mm. These crystals are truly amazing, well-defined and large for the species.


Brochantite

Formula
Cu4SO4(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Prismatic, Druse 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
green, emerald green, black 
Streak
pale green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Robert J. Waidler Collection

Cerussite

#RW51200
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
PbCO3 
Availability
Available
Price
$95.00
Size
8 x 6 x 3.5 cm - Sm Cabinet 
Tagged
carbonate  

Large specimen of lustrous white Cerussite showing large distinct crystals and most show twinning planes. There is a small spot on the backside which shows a green inclusion, most like Duftite. It did not take photos well, but in-hand this specimen is ver impressive.


Cerussite

Formula
PbCO3 
Crystal System
Orthorhombic 
Crystal Habit
Reticulate, Massive - Granular, Crystalline - Coarse 
Cleavage
Distinct, Distinct, None 
Luster
Adamantine 
Color
colorless, white, gray, blue, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Collection
Robert J. Waidler Collection
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Høgtuvaite

#51175
Locality
Hogtuva, Rana, Nordland, Norway 
Formula
Ca4(Fe2+6Fe3+6)O4[Si8Be2Al2O36
Availability
Available
Price
$125.00
Size
2.8 x 2.3 x 1.1 cm - Thumbnail 
Tagged
beryllium  
Special Info
Type & Only Locality 

Elongated, thin, bladed black crystals throughout the specimen. The largest crystals reach 9mm. It is extremely rare and found only at this deposit named for the nearest prominent landmark, Høgtuva peak. It is a berllium mineral of the Aenigmatite group.


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

Nifontovite

#50712
Locality
Mina Rey y Reina, Charcas, San Luis Potosi, Mexico 
Formula
Ca3[BO(OH)2]6·2H2
Availability
Available
Price
$175.00
Size
7 x 6 x 4.5 cm - Sm Cabinet 
Special Info
Fluorescent 

Three large, prominent crystals to 1.9cm showing angled striations. This locality is one of four worldwide and probably the best for crystal size. Excellent specimen.


Nifontovite

Formula
Ca3[BO(OH)2]6·2H2
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, gray 
Streak
white 
Class
Monoclinic 
Hardness
3.5 
Special Info
Fluorescent

Parisite-(Ce)

#51223
Locality
Snowbird mine, Lola Pass, Mineral Co., Montana, United States 
Formula
CaCe2(CO3)3F2 
Availability
Available
Price
$75.00
Size
7.5 x 6.5 x 3.5 cm - Sm Cabinet 
Tagged
carbonate , REE mineral  

Long 5cm brown crystal in matrix.


Parisite-(Ce)

Formula
CaCe2(CO3)3F2 
Crystal System
Trigonal 
Crystal Habit
Acicular, Striated, Prismatic 
Cleavage
Distinct, None, None 
Luster
Vitreous - Greasy 
Color
brown, brownish yellow, grayish yellow, yellow 
Streak
white 
Class
Trigonal - Pyramidal 
Fracture
Brittle 
Hardness
4.5 

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