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Mixed Minerals

Sunday, 05 January 2020 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including studtite, tantalowodginite, titanite, wardite, whiteite-(cafemg), and wulfenite and more from places like Shinkolobwe, Katanga, Democratic Republic of Congo, Emmons quarry, Oxford, Co., Maine, United States, Manton Avenue quarry, Manton, Providence Co., Rhode Island, United States, Rapid Creek, Yukon Territory, Canada, and Rowley mine, Maricopa Co., Arizona, United States.

Studtite

with Becquerelite, Masuyite and Rutherfordine - #52089
Locality
Shinkolobwe, Katanga, Democratic Republic of Congo 
Formula
(UO2)O2(H2O)2·2H2
Availability
Sold
Size
5 x 4 x 3 cm - Miniature 
Special Info
Radioactive!! 

Amazingly bright specimen full of vibraint yellow, acicular sprays of Studtite (red arrow) with beautiful, striated prismatic crystals of Becquerelite (3mm)  and tabular orange Masuyite with squared and pointed terminations to 2mm. Also in association is tan needles of Rutherfordine. Overall the bright orange is Curite and the matrix is Uraninite. 

This is an ex-Willaim Pinch specimen who passed it on to Don Cooke. Pinch helped me identifiy the various minerals.

For domestic shipping only and I would prefer to deliver it to Tucson, duing the show. Obviously it is very hot.


Studtite

Formula
(UO2)O2(H2O)2·2H2
Crystal System
Monoclinic 
Crystal Habit
Encrustations, Acicular 
Cleavage
None, None, None 
Color
yellow, white yellow 
Streak
light yellow 
Class
Monoclinic - Prismatic 
Fracture
Flexible 
Hardness
1-2 
Collection
Don Cooke Collection
Special Info
Radioactive!!
On Dakota Matrix
Previously Sold Studtite
On Dakota Matrix
Other Available Studtite
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Tantalowodginite

#52085
Locality
Emmons quarry, Oxford, Co., Maine, United States 
Formula
(Mn,◻)TaTa2O8 
Availability
Sold
Size
2.3 x 1.1 x 1.1 cm - Thumbnail 
Tagged
pegmatite mineral  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

An excellent partial tabular black crystal of Tantalowodginite with striations to 1cm across with more in a phosphate matrix. Tantalowodginite is an extremely rare mineral found only at Tanco and the Emmons quarry, the type locality. Analyzed.


Tantalowodginite

Formula
(Mn2,[ ])4Ta4Ta8O32 
Crystal System
Monoclinic 
Luster
Adamantine 
Color
brown 
Class
Monoclinic - Prismatic 
Hardness
5-5.5 
Special Info
XRD Confirmed
Special Info
EDS Confirmed

Titanite

#AH52071
Locality
Manton Avenue quarry, Manton, Providence Co., Rhode Island, United States 
Formula
CaTiSiO5 
Availability
Sold
Size
8.5 x 7 x 6 cm - Sm Cabinet 

An "old-timer" obtained by Hampson in 1965 with yellow Titanite crystals to 2cm in metamorphic rock, perhaps Fuchsite.


Titanite

Formula
CaTiSiO5 
Crystal System
Monoclinic 
Crystal Habit
Massive - Lamellar, Crystalline - Fine 
Cleavage
Distinct, Imperfect, Imperfect 
Luster
Adamantine - Resinous 
Color
reddish brown, gray, yellow, green, red 
Streak
reddish white 
Class
Monoclinic - Prismatic 
Fracture
Sub Conchoidal 
Hardness
5-5.5 
Collection
Arnold G Hampson Collection
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On Dakota Matrix
Previously Sold Titanite
On Dakota Matrix
Other Available Titanite
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Wardite

#AH52076
Locality
Rapid Creek, Yukon Territory, Canada 
Formula
NaAl3(PO4)2(OH)4·2H2
Availability
Sold
Size
3.5 x 2.5 x 1.5 cm - Miniature 
Tagged
phosphate  

Superb 8-9mm striated crystals.


Wardite

Formula
NaAl3(PO4)2(OH)4·2H2
Crystal System
Tetragonal 
Crystal Habit
Encrustations, Radial, Fibrous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
blue green, colorless, white, light green 
Streak
white 
Class
Tetragonal - Trapezohedral 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Wardite
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Whiteite-(Cafemg)

#AH52077
Locality
Rapid Creek, Yukon Territory, Canada 
Formula
CaMn2+Mg2Al2(PO4)4(OH)2·8H2
Availability
Sold
Size
4 x 4.5 x 3 cm - Miniature 

It is kind of a homely looking piece and if it came from anywhere else, like a pegmatite, the piece would be worth hundreds. Having said that, it is still a huge 3cm cluster of curled, pointed crystals of this rare mineral.


Whiteite-(Cafemg)

Formula
CaFe2+Mg2Al2(PO4)4(OH)2·8H2
Crystal System
Monoclinic 
Crystal Habit
Aggregates, Tabular 
Cleavage
Perfect, None, None 
Luster
Vitreous - Dull 
Color
yellow, yellow brown 
Streak
white 
Class
Monoclinic - Prismatic 
Hardness
Collection
Arnold G Hampson Collection

Wulfenite

#AH52024
Locality
Rowley mine, Maricopa Co., Arizona, United States 
Formula
PbMoO4 
Availability
Sold
Size
2.3 x 2.1 x 1.3 cm - Thumbnail 

Thumbnail of orange 5-6mm crystals.


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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On Dakota Matrix
Previously Sold Wulfenite
On Dakota Matrix
Other Available Wulfenite
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Mindat
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