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0 item @ $0.00  

Mixed Minerals

Sunday, 20 November 2022 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including calcioferrite, cassiterite, cerchiaraite-(mn), hemimorphite, matulaite, and metatorbernite and more from places like Klemms Quarry, Moculta, South Australia, Australia, Yaogangxian mine, Chenzhou, Hunan prov., China, Cerchiara mine, Borghetto di Vara, La Spezia, Liguria, Italy, Laochang mine, Gejiu Co., Honghe, Yunnan Province, China, Bachman mine, Northampton Co., Pennsylvania, United States, and Arcu su Linnarbu, Capoterra, Cagliari prov., Sardinia, Italy.

Calcioferrite

#BN59749
Locality
Klemms Quarry, Moculta, South Australia, Australia 
Formula
Ca4MgFe3+4(PO4)6(OH)4·12H2
Availability
Available
Price
$85.00
Size
4.5 x 2.5 x 2 cm - Miniature 
Tagged
phosphate  

Two light yellow crystal groups to 0.5mm. These are very nice crystals and look a little like Montgomeryite. Calcioferrite is found in only five countries and considered very rare. 


Calcioferrite

Formula
Ca4MgFe3+4(PO4)6(OH)4·12H2
Crystal System
Monoclinic 
Crystal Habit
Foliated, Reniform 
Cleavage
Perfect, Very Good, None 
Luster
Pearly 
Color
greenish yellow, yellow, yellow green, yellowish white 
Streak
yellowish white 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
2.5 
Collection
Dr. Buford Nichols Collection

Cassiterite

#AH59716
Locality
Yaogangxian mine, Chenzhou, Hunan prov., China 
Formula
SnO2 
Availability
Available
Price
$50.00
Size
6 x 3 x 1.5 cm - Sm Cabinet 

Nice miniature specimen of Cassiterite. The largest crystal is 1cm with several smaller. Each crystal is well-defined with a nice internal brown color.


Cassiterite

Formula
SnO2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Massive, Botryoidal 
Cleavage
Perfect, Indistinct, None 
Luster
Adamantine 
Color
brown, brownish black, colorless, green, gray 
Streak
brownish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Irregular 
Hardness
6-7 
Collection
Arnold G Hampson Collection

Cerchiaraite-(Mn)

#59692
Locality
Cerchiara mine, Borghetto di Vara, La Spezia, Liguria, Italy 
Formula
Ba4Mn4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl 
Availability
Available
Price
$65.00
Size
4 x 2.5 x 2.5 cm - Miniature 
Special Info
Type Locality 

Dark green crystal sprays and random acicular groups. Excellent specimen for this rare barium silicate.


Special Info
Type Locality

Hemimorphite

#59738
Locality
Laochang mine, Gejiu Co., Honghe, Yunnan Province, China 
Formula
Zn4Si2O7(OH)2·H2
Availability
Available
Price
$75.00
Size
6.5 x 4 x 5.5 cm - Sm Cabinet 

Nice rich blue botryoidal Hemimorphite.


Hemimorphite

Formula
Zn4Si2O7(OH)2·H2
Crystal System
Orthorhombic 
Crystal Habit
Massive, Stalactitic, Mammillary 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, greenish gray, yellow brown, white 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Conchoidal 
Hardness

Matulaite

#59766
Locality
Bachman mine, Northampton Co., Pennsylvania, United States 
Formula
CaAl18(PO4)12(OH)20·28H2
Availability
Available
Price
$65.00
Size
5.5 x 2.5 x 3.5 cm - Sm Cabinet 
Tagged
phosphate  
Special Info
Type Locality 

Pearly white flakes across face. Rich, very good speicmen from the type locality.


Matulaite

Formula
CaAl18(PO4)12(OH)20·28H2
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
colorless, white 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Special Info
Type Locality
Mineralpedia
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On Dakota Matrix
Previously Sold Matulaite
On Dakota Matrix
Other Available Matulaite
WebMineral
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Mindat
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Metatorbernite

#AH59752
Locality
Arcu su Linnarbu, Capoterra, Cagliari prov., Sardinia, Italy 
Formula
Cu(UO2)2(PO4)2·8H2
Availability
Available
Price
$25.00
Size
4 x 3 x 2.5 cm - Miniature 
Tagged
phosphate , copper  

Tiny, less than 0.5mm, tabular green Torbernite crystals.


Metatorbernite

Formula
Cu(UO2)2(PO4)2·8H2
Crystal System
Tetragonal 
Cleavage
Perfect, None, None 
Luster
Vitreous - Adamantine 
Color
light green, dark green 
Streak
light green 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle 
Hardness
2.5 
Collection
Arnold G Hampson Collection

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