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Mixed Minerals

Sunday, 13 September 2020 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including fluorite, gold, hematite, hemimorphite, and henrymeyerite and more from places like Gold King mine, La Plata Co., Colorado, United States, Verespatak, Romania, Bessie G mine, La Plata Co., Colorado, United States, San Pedro mine, New Placers dist., Santa Fe Co., New Mexico, United States, 79 mine, Gila Co., Arizona, United States, and Eveslogchorr Mt, Khibiny Massif, Kola Peninsula, Russia.

Fluorite

#AH54066
Locality
Gold King mine, La Plata Co., Colorado, United States 
Formula
CaF2 
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 

The piece was collected in 1961 by Arnold Hampson. The Fluorite is a light purple with what lookd like spheroidal crystals but are actually extremely complex cubic forms of 1-2 and 3 orders (I guess).


Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Fluorite
On Dakota Matrix
Previously Sold Fluorite
On Dakota Matrix
Other Available Fluorite
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View Fluorite
Mindat
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Gold

#WR54048
Locality
Verespatak, Romania 
Formula
Au 
Availability
Sold
Size
Micromount 
Tagged
native element  

A micromount with a group of fine Gold crystals. The group is 5mm.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Willard L. Roberts Collection
Mineralpedia
View Goldmanite
On Dakota Matrix
Previously Sold Gold
On Dakota Matrix
Other Available Gold
WebMineral
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Mindat
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Gold

with Coloradoite - #AH54077
Locality
Bessie G mine, La Plata Co., Colorado, United States 
Formula
Au 
Availability
Sold
Size
5.5 x 4 x 3 cm - Sm Cabinet 
Tagged
native element  

A good, juicy ore specimen with rare brassy, abundant, Coloradoite up to 1cm (no crystals) and associated Gold grains to around 1mm and less.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection
Mineralpedia
View Goldmanite
On Dakota Matrix
Previously Sold Gold
On Dakota Matrix
Other Available Gold
WebMineral
View Gold
Mindat
View Gold

Hematite

with Fluorite & Quartz (twin) - #AH54063
Locality
San Pedro mine, New Placers dist., Santa Fe Co., New Mexico, United States 
Formula
Fe2O3 
Availability
Sold
Size
7 x 5 x 3 cm - Sm Cabinet 

A fascinating specimen with a lot of micro crystals packed in a 3x2cm vug. The Hematite occurs as thin plates in rosettes  (3mm) and are an astounding internal red color. Other crystals include Fluorite to 6mm, clear Quartz prisms and one Japan-law crystal to around 2mm. You'll have loads of fun viewing this specimen under the scope!!


Hematite

Formula
Fe2O3 
Crystal System
Trigonal 
Crystal Habit
Tabular, Blocky, Earthy 
Cleavage
None, None, None 
Luster
Metallic 
Color
reddish gray, black, blackish red 
Streak
reddish brown 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Conchoidal 
Hardness
6.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Hematite
On Dakota Matrix
Previously Sold Hematite
On Dakota Matrix
Other Available Hematite
WebMineral
View Hematite
Mindat
View Hematite

Hemimorphite

#AH54074
Locality
79 mine, Gila Co., Arizona, United States 
Formula
Zn4Si2O7(OH)2·H2
Availability
Available
Price
$395.00
Size
9.5 x 5.5 x 4.5 cm - Cabinet 

Beautiful specimen of botyroidal Hemimorphite with a rare (for 79) light bluish green coating, but with the more typical blue color on the edges. 


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
Collection
Arnold G Hampson Collection

Henrymeyerite

#PD54026
Locality
Eveslogchorr Mt, Khibiny Massif, Kola Peninsula, Russia 
Formula
BaTi7Fe2+O16 
Availability
Sold
Size
1 x 0.5 x 0.8 cm - Thumbnail 

Glossy, black crystal grains to 1mm with abundant coverage. Henrymeyerite is found at only 5 or 6 worldwide localities. It is a barium-titanium oxide.


Henrymeyerite

Formula
BaTi7Fe2+O16 
Crystal System
Tetragonal 
Crystal Habit
Acicular 
Luster
Adamantine 
Color
black 
Streak
reddish brown 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle 
Hardness
5-6 
Collection
Don Phillips Collection

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