mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

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 acanthite, adamite, almandine, ankerite, atacamite, and aurichalcite and more from places like San Juan de Rayas mine, Guanajuato, Mexico, Mina Ojuela, Mapimi, Durango, Mexico, Lincolnton, Lincoln Co., North Carolina, United States, Silver Bell mine, Tunnel No. 6, Ophir dist., San Miguel Co., Colorado, United States, Lily mine, Pisco Umay, Ica Dept., Peru, and Worlds Fair claims, Granite Gap, Hildalgo Co., New Mexico, United States.

Acanthite

#BN51841
Locality
San Juan de Rayas mine, Guanajuato, Mexico 
Formula
Ag2
Availability
Sold
Size
3 x 1.5 x 1.5 cm - Thumbnail 
Tagged
sulfide , silver  

Cubic crystals, the largest is 9mm at the top and gradually gets small down the group. 


Acanthite

Formula
Ag2
Crystal System
Monoclinic 
Crystal Habit
Blocky, Skeletal, Arborescent 
Cleavage
poor to none 
Luster
Metallic 
Color
lead gray, gray, iron black 
Streak
shining black 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2-2.5 
Collection
Dr. Buford Nichols Collection
Mineralpedia
View Acanthite
On Dakota Matrix
Previously Sold Acanthite
On Dakota Matrix
Other Available Acanthite
WebMineral
View Acanthite
Mindat
View Acanthite

Adamite

(manganoan) - #50848
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
Zn2AsO4(OH) 
Availability
Sold
Size
6 x 4 x 4.5 cm - Sm Cabinet 
Tagged
arsenate  

Purple tipped Adamite crystals to 5mm with whiteish cores.


Adamite

Formula
Zn2AsO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Druse, Encrustations 
Cleavage
One Good 
Luster
Vitreous - Resinous 
Color
yellow, green, violet, pink, yellowish green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Mineralpedia
View Adamite
On Dakota Matrix
Previously Sold Adamite
On Dakota Matrix
Other Available Adamite
WebMineral
View Adamite
Mindat
View Adamite

Almandine

#AH51812
Locality
Lincolnton, Lincoln Co., North Carolina, United States 
Formula
Fe2+3Al2(SiO4)3 
Availability
Sold
Size
2.5 x 2.5 x 2.5 cm - Thumbnail 

Three complete, well-formed Almadine crystals. The larget is 2.5cm.


Almandine

Formula
Fe2+3Al2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Equant crystals, rounded grains, typically well-formed dodecahedra or trapezohedra 
Cleavage
None 
Luster
Vitreous - Resinous 
Color
brown, brownish red, red, black, black red 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
7-8 
Collection
Arnold G Hampson Collection
Mineralpedia
View Almandine
On Dakota Matrix
Previously Sold Almandine
On Dakota Matrix
Other Available Almandine
WebMineral
View Almandine
Mindat
View Almandine

Ankerite

with Galena - #AH51837
Locality
Silver Bell mine, Tunnel No. 6, Ophir dist., San Miguel Co., Colorado, United States 
Formula
CaFe2+(CO3)2 
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 
Tagged
carbonate  

A good example of vein mineralization from this mine, the Silver Bell mine, in the Ophir district of  San Miguel County. It is interesting to see the zones of mineralization in the specimen from the wall zone to Galena with Calcite and then creamy light brwon Ankerite, which eventually reaches the open fractures with room for the Ankerite crystals to form. Self collected by Hampson in 1962.

Read Hampson's bio here.


Ankerite

Formula
CaFe2+(CO3)2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Massive, Granular 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
brown, brownish yellow, gray, gray brown, white 
Streak
white 
Class
Trigonal - Rhombohedral 
Fracture
Sub Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection
Mineralpedia
View Ankerite
On Dakota Matrix
Previously Sold Ankerite
On Dakota Matrix
Other Available Ankerite
WebMineral
View Ankerite
Mindat
View Ankerite

Atacamite

#AH51846
Locality
Lily mine, Pisco Umay, Ica Dept., Peru 
Formula
Cu2Cl(OH)3 
Availability
Sold
Size
4 x 3.5 x 1 cm - Miniature 
Tagged
copper  

Free-standing acicular green Atacamite crystals to 4mm. Very nice piece.


Atacamite

Formula
Cu2Cl(OH)3 
Crystal System
Orthorhombic 
Crystal Habit
Euhedral Crystals, Fibrous, Granular 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
green, yellow, yellow green, black green 
Streak
apple green 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
3-3.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Atacamite
On Dakota Matrix
Previously Sold Atacamite
On Dakota Matrix
Other Available Atacamite
WebMineral
View Atacamite
Mindat
View Atacamite
SOLD
Aurichalcite - AH51844
Aurichalcite - AH51844

Aurichalcite

with Calcite - #AH51844
Locality
Worlds Fair claims, Granite Gap, Hildalgo Co., New Mexico, United States 
Formula
Zn5(CO3)2(OH)6 
Availability
Sold
Size
3.5 x 3 x 1 cm - Miniature 
Tagged
carbonate  

Small miniature specimen with unique Aurichalcite in the Calcite and exposed Auricalcite in-between the Calcite crystals.


Aurichalcite

Formula
Zn5(CO3)2(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Druse, Encrustations, Acicular 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
pale green, sky blue, greenish blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2019 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map