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0 item @ $0.00  

Mexican Minerals

Tuesday, 24 March 2020 12:00 PM

Introducing the "Mexican Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including calcite, conichalcite, creedite, descloizite, and gypsum and more from places like Santa Eulalia, Chihuahua, Mexico, Mina Ojuela, Mapimi, Durango, Mexico, Navidad mine, Abasolo, Rodeo, Durango, Mexico, Los Lamentos, Chihuahua, Mexico, and Naica, Mun. de Saucillo, Chihuahua, Mexico.

Calcite

#AH52778
Locality
Santa Eulalia, Chihuahua, Mexico 
Formula
CaCO3 
Availability
Sold
Size
13 x 10 x 7 cm - Cabinet 

This is an interesting specimen of a Calcite cluster once called the "Mariposa" habit. These are scalenohedral crystals to 3cm some coated with a thin veneer of chocolate iron oxide. There is a second generation of colorless, complex Calcite on top of the aforementioned Calcite. A third generation can be seen as smalle 1-3mm Calcite crystals occupying the terminations of some of the crystals. Acquired by Hampson in 1971. These Calcites are rarely offered on the market these days. It is a classic for Mexico.


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
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Calcite

#AH52779
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
CaCO3 
Availability
Sold
Size
14 x 8 x 9 cm - Cabinet 
Tagged
carbonate  

Amazing chocolate brown scalenohedral crystals to 3cm in a geode-like setting.


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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Conichalcite

#AH52755
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
CaCuAsO4(OH) 
Availability
Sold
Size
10 x 7 x 7 cm - Cabinet 
Tagged
arsenate , copper  

Bright green tiny clusters of Conichalcite with very good coverage on limonite matrix. Attractive specimen. There is nice Malachite and Calcite on the backside.


Conichalcite

Formula
CaCuAsO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Fibrous, Reniform, Massive 
Cleavage
None, None, None 
Luster
Vitreous - Greasy 
Color
yellow green, emerald green 
Streak
light green 
Class
Orthorhombic - Disphenoidal 
Fracture
Brittle - Uneven 
Hardness
4.5 
Collection
Arnold G Hampson Collection

Creedite

#BC52717
Locality
Navidad mine, Abasolo, Rodeo, Durango, Mexico 
Formula
Ca3Al2(SO4)(OH)2F8·2H2
Availability
Available
Price
$375.00
Size
15 x 9 x 7 cm - Cabinet 

Large, eye-catching orange Creedite with crystaols to over 1.5cm in three ball-like group. Very nice, showy, specimen for the cabinet.


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
Barbara Cureton Collection
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Descloizite

#AH52752
Locality
Los Lamentos, Chihuahua, Mexico 
Formula
PbZnVO4(OH) 
Availability
Sold
Size
8.5 x 6 x 5 cm - Sm Cabinet 
Tagged
vanadium  

Reddish brown rosettes of Desclozite covering entire specimen. 


Descloizite

Formula
PbZnVO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Plumose, Tabular, Encrustations 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
dark brownish black, dark reddish brown, orange red, reddish brown, black 
Streak
light brownish green 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Arnold G Hampson Collection

Gypsum

var. selenite - #AH52770
Locality
Naica, Mun. de Saucillo, Chihuahua, Mexico 
Formula
CaSO4·2H2
Availability
Sold
Size
6.5 x 10 x 8 cm - Cabinet 

A cluster of slim selentite crystals to 3-4cm. Each crystal is nicely terminated. 


Gypsum

Formula
CaSO4·2H2
Crystal System
Monoclinic 
Crystal Habit
Tabular, Crystalline - Coarse, Massive - Fibrous 
Cleavage
Perfect, Distinct, Distinct 
Luster
Pearly 
Color
white, colorless, yellowish white, greenish white, brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Fibrous 
Hardness
Collection
Arnold G Hampson Collection
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On Dakota Matrix
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