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Hampson Collection

Friday, 11 October 2019 06:00 PM

Introducing the "Hampson Collection" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including fluorite, hematite, vanadinite, and wulfenite and more from places like Queen Ann claim, Socorro Co., New Mexico, United States, Three Turkey Canyon, Chinle, Apache Co., Arizona, United States, Old Yuma mine, Pima Co., Arizona, United States, and Mammoth mine, Tiger, Pinal Co., Arizona, United States.

Fluorite

#AH51445
Locality
Queen Ann claim, Socorro Co., New Mexico, United States 
Formula
CaF2 
Availability
Available
Price
$35.00
Size
6 x 5 x 2.5 cm - Sm Cabinet 

Spherical habit of light green, translucent Fluorite crystals to around 1.7cm each.


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
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Hematite

#AH51432
Locality
Three Turkey Canyon, Chinle, Apache Co., Arizona, United States 
Formula
Fe2O3 
Availability
Available
Price
$50.00
Size
7.5 x 7 x 3.5 cm - Sm Cabinet 

It's not a chocolate treat, but it is rather disgusting looking specimen. This is a botyroidal mass of heavy Hematite. It is though rather interesting and you have to wonder how this forms. I suspect a low temperature fluid phase in open fractures produced this piece. Collected by Arnold Hampson in 1968.


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
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Vanadinite

#AH51448
Locality
Old Yuma mine, Pima Co., Arizona, United States 
Formula
Pb5(VO4)3Cl 
Availability
Available
Price
$150.00
Size
5 x 5.5 x 4 cm - Sm Cabinet 
Tagged
vanadium  

An excellent specimen for this locality. The crystals are large with good color and reach 6mm in openings created in-between Baryte(?) box work. Originated from the Columbine Mineral Shop in Ouray, Colorado.


Vanadinite

Formula
Pb5(VO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Globular, Prismatic, Nodular 
Cleavage
None, None, None 
Luster
Adamantine 
Color
brown, brownish yellow, brown red, colorless, yellow 
Streak
brownish yellow 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection

Wulfenite

with Mimetite - #AH51455
Locality
Mammoth mine, Tiger, Pinal Co., Arizona, United States 
Formula
PbMoO4 
Availability
Available
Price
$125.00
Size
9 x 5.5 x 3.5 cm - Sm Cabinet 

This specimen has a full display of beautiful, fiery orange and reddish orange colors. Most of the specimen is covered with tiny bright orange and acicular Mimetite crystal sprays which also cover many of the Wulfenite crystals. The Wulfenite occurs as bright translucent orange tabular crystals to about 5-6mm.  It is a very nice, eye catching specimen.


Wulfenite

Formula
PbMoO4 
Crystal System
Tetragonal 
Crystal Habit
Tabular, Pyramidal 
Cleavage
Imperfect, None, None 
Luster
Resinous - Greasy 
Color
orange yellow, waxy yellow, yellowish gray, olive green, brown 
Streak
yellowish white 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
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