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Rare Minerals for Sale

Saturday, 23 November 2019 04:00 PM

Introducing the "Rare Minerals for Sale" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including calcite, copper, creedite, kingsmountite, and samuelsonite and more from places like Treasury Tunnel, Ouray Co., Colorado, United States, Zacatecas, Mexico, Conglomerate Lode, Lake Superior, Michigan, United States, Liberty (Hall) mine, Nye Co., Nevada, United States, Foote mine, Cleveland Co., North Carolina, United States, and Palermo mine, Groton, Grafton Co., New Hampshire, United States.

Calcite

#AH51786
Locality
Treasury Tunnel, Ouray Co., Colorado, United States 
Formula
CaCO3 
Availability
Available
Price
$175.00
Size
13 x 15 x 5 cm - Cabinet 
Tagged
carbonate  

Large cabinet group of dog-tooth Calcite crystals to 2cm. 


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
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Previously Sold Calcite
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Other Available Calcite
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Calcite

with Malachite - #BN51817
Locality
Zacatecas, Mexico 
Formula
CaCO3 
Availability
Available
Price
$40.00
Size
7 x 6 x 4 cm - Sm Cabinet 
Tagged
carbonate  

Colorless rhombic crystals of Calcite to 9mm with Malachite on the side.


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Dr. Buford Nichols Collection
Mineralpedia
View Calcite
On Dakota Matrix
Previously Sold Calcite
On Dakota Matrix
Other Available Calcite
WebMineral
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Mindat
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Copper

#AH51787
Locality
Conglomerate Lode, Lake Superior, Michigan, United States 
Formula
Cu 
Availability
Available
Price
$275.00
Size
17 x 9 x 5 cm - Cabinet 
Tagged
native element  

Beautiful Copper specimen crystallized in-between conglomerate rock. 


Copper

Formula
Cu 
Crystal System
Isometric 
Crystal Habit
Nodular, Arborescent 
Cleavage
None, None, None 
Luster
Metallic 
Color
brown, copper red, light pink, red 
Streak
rose 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection
Mineralpedia
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Previously Sold Copper
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Creedite

#AH51796
Locality
Liberty (Hall) mine, Nye Co., Nevada, United States 
Formula
Ca3Al2(SO4)(OH)2F8·2H2
Availability
Available
Price
$125.00
Size
4.5 x 4.5 x 2.5 cm - Miniature 

Lilac colored sharp Creedite crystals to 3mm, but mostly 1-2mm. Excellent specimen.


Creedite

Formula
Ca3Al2(SO4)(OH)2F8·2H2
Crystal System
Monoclinic 
Crystal Habit
Granular, Radial, Prismatic 
Cleavage
Perfect, None, None 
Luster
Vitreous - Greasy 
Color
colorless, violet, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
3.5 
Collection
Arnold G Hampson Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Creedite
On Dakota Matrix
Other Available Creedite
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Mindat
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Kingsmountite

#AH51791
Locality
Foote mine, Cleveland Co., North Carolina, United States 
Formula
Ca4Fe2+Al4(PO4)6(OH)4·12H2
Availability
Sold
Size
3.0 x 2.5 x 1.5 cm - Thumbnail 
Tagged
phosphate , pegmatite mineral  
Special Info
Type Locality 

Radial groups to 0.75mm of white or colorless Kingsmountite crystals.

Kingmountite  crystals are much like Montgomeryite both of which form lath-like crystals with a sloping terminations. It is in fact isostructural with Montgomeryite and both are members of the Calcioferrite group. It is also the iron analogue of Montgomeryite and is usually white and sometimes light pink. The best specimens are probably from Hagendorf, although many fine specimens have been collected at Foote. It is primarily a mineral which forms in pegmatites, although has occured in bat caves and hydrothermal altered phosphate rich sedimentary deposits This can be considered a good specimen with both good coverage and crystal groups. 


Kingsmountite

Formula
Ca4Fe2+Al4(PO4)6(OH)4·12H2
Crystal System
Monoclinic 
Crystal Habit
Bladed, Radial, Spherical 
Luster
Pearly 
Color
light brown, pearl white 
Streak
white 
Class
Monoclinic - Sphenoidal 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Special Info
Type Locality

Samuelsonite

#PD51840
Locality
Palermo mine, Groton, Grafton Co., New Hampshire, United States 
Formula
Ca9Mn2+4Al2(PO4)10(OH)2 
Availability
Available
Price
$350.00
Reduced Price
$175.00
Size
Capsule 
Tagged
phosphate , pegmatite mineral  
Special Info
Type Locality 
Special Info
Raman 

A few 1mm or less tranlucent and colorless crystal fragments of extremely rare Samuelsonite. These were confirmed by Raman.


Samuelsonite

Formula
Ca9Mn2+4Al2(PO4)10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Striated 
Cleavage
Good, None, None 
Luster
Subadamantine 
Color
colorless 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
Phillips Collection
Special Info
Type Locality
Special Info
Raman

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