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Mixed Minerals

Sunday, 20 November 2022 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including hemimorphite, kasolite, keckite, leucophosphite, linarite, and lollingite and more from places like Laochang mine, Gejiu Co., Honghe, Yunnan Province, China, Musonoi mine Shaba Cu belt, DR of Congo, Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany, Těškov quarry, SE of Prague, Bohemia, Czech Republic, Bingham dist., Socorro Co., New Mexico, United States, and South mine, Broken Hill, New South Wales, Australia.

Hemimorphite

#59738
Locality
Laochang mine, Gejiu Co., Honghe, Yunnan Province, China 
Formula
Zn4Si2O7(OH)2·H2
Availability
Available
Price
$75.00
Size
6.5 x 4 x 5.5 cm - Sm Cabinet 

Nice rich blue botryoidal Hemimorphite.


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

Kasolite

with Cuprosklodowskite - #59690
Locality
Musonoi mine Shaba Cu belt, DR of Congo 
Formula
Pb(UO2)SiO4·H2
Availability
Sold
Size
5.5 x 5 x 4.5 cm - Sm Cabinet 

Bright orange, bladed Kasolite crystals to 1mm scattered throughout green Malachite and Torbernite matrix. Also in the mix are lime green acicular crystal groups of Cuprosklodowsite.


Kasolite

Formula
Pb(UO2)SiO4·H2
Crystal System
Monoclinic 
Crystal Habit
Radial, Prismatic, Fibrous 
Cleavage
Perfect, Good, Good 
Luster
Resinous - Greasy 
Color
green, gray green, yellow, yellow brown, reddish orange 
Streak
light brownish yellow 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
Mineralpedia
View Kasolite
On Dakota Matrix
Previously Sold Kasolite
On Dakota Matrix
Other Available Kasolite
WebMineral
View Kasolite
Mindat
View Kasolite
SOLD
Keckite - 59704
Keckite - 59704

Keckite

#59704
Locality
Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany 
Formula
CaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3·7H2
Availability
Sold
Size
2.3 x 1.5 x 0.9 cm - Thumbnail 
Special Info
Type Locality 

One single, excellent crystal to about 0.75mm. This is a rare mineral and found sparingly in only in six countries. Keckite is named for Erich Keck....I love his photo on Mindat, looks like my kind of mineralogist!


Keckite

Formula
CaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3·7H2
Crystal System
Monoclinic 
Crystal Habit
Fan Shaped 
Cleavage
Poor, Indistinct, None 
Luster
Earthy (Dull) 
Color
brown, gray brown, yellow brown 
Streak
yellow white 
Class
Monoclinic - Prismatic 
Fracture
Flexible 
Hardness
4.5 
Special Info
Type Locality
Mineralpedia
View Keckite
On Dakota Matrix
Previously Sold Keckite
On Dakota Matrix
Other Available Keckite
WebMineral
View Keckite
Mindat
View Keckite

Leucophosphite

#BN59747
Locality
Těškov quarry, SE of Prague, Bohemia, Czech Republic 
Formula
KFe3+2(PO4)2(OH)·2H2
Availability
Sold
Size
6 x 4.5 x 2 cm - Sm Cabinet 
Tagged
phosphate  

Most pegmatites don't even have Leucophophite crystals as sharp and well-defined as this one. This is not a pegmatite deposit, but rather a quartz porphyry deposit mined for gravel (I assume). These Leucophosphite crystals are honey color to about 0.25mm coating Quartz with a film of red oxide, which provides a nice contrast of colors.


Leucophosphite

Formula
KFe3+2(PO4)2(OH)·2H2
Crystal System
Monoclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Dull 
Color
brown, brownish yellow, colorless, greenish, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
3.5 
Collection
Dr. Buford Nichols Collection

Linarite

#59724
Locality
Bingham dist., Socorro Co., New Mexico, United States 
Formula
PbCuSO4(OH)2 
Availability
Sold
Size
2.5 x 1.5 x 0.5 cm - Thumbnail 
Tagged
copper  

Lustrous, strikingly blue bladed crystals.


Linarite

Formula
PbCuSO4(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Platy, Encrustations 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
sky blue, deep blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Linarite
On Dakota Matrix
Previously Sold Linarite
On Dakota Matrix
Other Available Linarite
WebMineral
View Linarite
Mindat
View Linarite

Lollingite

in Rhodonite - #59745
Locality
South mine, Broken Hill, New South Wales, Australia 
Formula
FeAs2 
Availability
Sold
Size
5.5 x 4.5 x 4 cm - Sm Cabinet 
Tagged
sulfide  

Pink massive Rhodonite with slender, silvery, Lollingite crystals to 1.2cm. Lollingite typically forms this, slender crystals such as these.


Lollingite

Formula
FeAs2 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Prismatic, Twinning Common 
Cleavage
Distinct, None, None 
Luster
Metallic 
Color
silvery white, tarnish gray 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness

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