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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 altaite, bayleyite, beryl, chalcocite, cobaltomenite, and fluorite and more from places like Hilltop mine, Organ dist., Dona Ana Co., New Mexico, United States, Poison Canyon mine, Lake Ambrosia dist., McKinely Co., New Mexico, United States, Pingwu Co., Mianyang pref., Sichuan prov., China, Cashin mine, Montrose Co., Colorado, United States, Lopez Incline, Temple Mountain, Emery Co., Utah, United States, and Queen Ann claim, Socorro Co., New Mexico, United States.

Altaite

with Tellurium - #AH51470
Locality
Hilltop mine, Organ dist., Dona Ana Co., New Mexico, United States 
Formula
PbTe 
Availability
Sold
Size
6 x 2.5 x 3.5 cm - Sm Cabinet 
Tagged
tellurium  

This specimen is nearly all Altaite. You might think the brassy colored veins are Pyrite. But, examination under the scope reveals a sectility like butter. It is tarnished and fresh is a silvery color. The Tellurium is brittle and is scare on this specimen. It's a heavy specimen too.


Altaite

Formula
PbTe 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
tin white, yellowish tin white, bronze yellow 
Streak
black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
Arnold G Hampson Collection
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Bayleyite

#AH51464
Locality
Poison Canyon mine, Lake Ambrosia dist., McKinely Co., New Mexico, United States 
Formula
Mg2(UO2)(CO3)3(H2O)12·6H2
Availability
Sold
Size
3 x 2.5 x 0.3 cm - Thumbnail 
Tagged
carbonate  

Yellow, thin, lath-ilke crystals in groups and fans less than 1mm. I am undecided what the faint yellow material is. Perhaps just gypsum with inclusions.


Bayleyite

Formula
Mg2(UO2)(CO3)3(H2O)12·6H2
Crystal System
Monoclinic 
Cleavage
None, None, None 
Luster
Vitreous - Dull 
Color
yellow, pale yellow, yellowish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Bayleyite
On Dakota Matrix
Previously Sold Bayleyite
On Dakota Matrix
Other Available Bayleyite
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Mindat
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Beryl

with Quartz & Muscovite - #AH51441
Locality
Pingwu Co., Mianyang pref., Sichuan prov., China 
Formula
Be3Al2Si6O18 
Availability
Sold
Size
6 x 5 x 4 cm - Sm Cabinet 
Tagged
beryllium , pegmatite mineral  

A great combination specimen from a pocket zone of a pegmatite. All of the said minerals are fine examples of minerals which commonly occur in pegmatites, but uncommonly forms crystals of such perfection. The Beryl, is an aquamarinne crystal, with a rare tabular form and complex faces. It is lustrous and has a good light aqua color. Interestingly the Beryl crystal seems to penetrate the backside and emerges as the other half of of the crystal. There is one other smaller crystal of Beryl along the side. The Quartz is waterclear, perfectly formed and is 2cm with a few sidekicks. All over the matrix are thin, perfectly formed yellowish white Muscovite crystals. 


Beryl

Formula
Be3Al2Si6O18 
Crystal System
Hexagonal 
Crystal Habit
Crystalline - Coarse, Prismatic, Columnar 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
green, blue, yellow, colorless, pink 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
7.5-8 
Collection
Arnold G Hampson Collection
Mineralpedia
View Beryl
On Dakota Matrix
Previously Sold Beryl
On Dakota Matrix
Other Available Beryl
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Mindat
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SOLD
Chalcocite - AH51427
Chalcocite - AH51427

Chalcocite

#AH51427
Locality
Cashin mine, Montrose Co., Colorado, United States 
Formula
Cu2
Availability
Sold
Size
6 x 5 x 4 cm - Sm Cabinet 
Tagged
sulfide , copper  

This is strickly a locality specimen or representative piece from a Copper/Silver mine located 95 miles NW of Durango along the La Sal Creek near the Nyswonger Mesa on the far west side of Colorado. Mindat reports over 2200 feet of underground workings and a production of 1.8 million pounds of Copper and 425,000 ounces of Silver from ore veins in the La Plata sandstone. A one time sheet Copper could be found on the dumps (ref. previous Hampson update). The piece here is an example of the Copper ore, in this case Chalcocite (probably argentiferous) and associated Malachite. It was self-collected by Arnold Hampson in 1960.


Chalcocite

Formula
Cu2
Crystal System
Monoclinic 
Crystal Habit
Massive, Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
blue black, gray, black, black gray, steel gray 
Streak
grayish black 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection

Cobaltomenite

#AH51454
Locality
Lopez Incline, Temple Mountain, Emery Co., Utah, United States 
Formula
CoSe4+O3·2H2
Availability
Sold
Size
5 x 3 x 1 cm - Miniature 

Purple micro crystals across face. Rich.


Cobaltomenite

Formula
CoSe4+O3·2H2
Crystal System
Monoclinic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
dark red, pink 
Streak
dark pink 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
2-2.5 
Collection
Arnold G Hampson Collection

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
Mineralpedia
View Fluorite
On Dakota Matrix
Previously Sold Fluorite
On Dakota Matrix
Other Available Fluorite
WebMineral
View Fluorite
Mindat
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