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0 item @ $0.00  

Mixed Minerals

Sunday, 08 September 2019 08:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including augite, axinite, brochantite, chanabayaite, fluorapatite, and franckeite and more from places like Arendal, Aust-Agder, Norway, Franklin, Sussex Co., New Jersey, United States, Metcalf mine, Greenlee Co., Arizona, United States, Pabellón de Pica, Chanabaya, Iquique, Tarapacá Region, Chile, Cerro de Mercado mine, Durango, Mexico, and Siglo Viente mine, Llallagua, Bolivia.

SOLD
Augite - PD45971
Augite - PD45971

Augite

with scapolite - #PD45971
Locality
Arendal, Aust-Agder, Norway 
Formula
(Ca,Mg,Fe)2(Si,Al)2O6 
Availability
Sold
Size
8 x 6 x 4.5 cm - Sm Cabinet 

1.8cm dark green prysmatic Augite crystals nicely formed in pocket with white Scapolite.  Ex-David New collection.


Augite

Formula
(Ca,Mg,Fe)2(Si,Al)2O6 
Crystal System
Monoclinic 
Crystal Habit
Massive - Fibrous, Columnar, Granular 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
brown green, green, light brown, dark brown, black 
Streak
greenish gray 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5-6.5 
Collection
Don Phillips Collection
On Dakota Matrix
Previously Sold Augite
On Dakota Matrix
Other Available Augite
WebMineral
View Augite
Mindat
View Augite

Axinite

#FD22009
Locality
Franklin, Sussex Co., New Jersey, United States 
Formula
Ca2Mn2+Al2BSi4O15(OH) 
Availability
Available
Price
$25.00
Size
2.5 x 2 x 2 cm - Thumbnail 

Yellow-orange thin tabular crystals to 1mm with minor pink Hancockite(?).


Mineralpedia
View Axinite-(Fe)
On Dakota Matrix
Previously Sold Axinite
On Dakota Matrix
Other Available Axinite
WebMineral
View Axinite
Mindat
View Axinite

Brochantite

#RW51178
Locality
Metcalf mine, Greenlee Co., Arizona, United States 
Formula
Cu4SO4(OH)6 
Availability
Sold
Size
5.5 x 3 x 1.5 cm - Sm Cabinet 
Tagged
copper  

Beautiful dark green and lustrous Brochantite crystals to 4mm.  Some of these crystals are in nice radial sprays as the photos show.  Excellent specimen.


Brochantite

Formula
Cu4SO4(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Prismatic, Druse 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
green, emerald green, black 
Streak
pale green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 

Chanabayaite

#39511
Locality
Pabellón de Pica, Chanabaya, Iquique, Tarapacá Region, Chile 
Formula
CuCl(N3C2H2)(NH3) 0.25H2
Availability
Sold
Size
5 x 3.5 x 3 cm - Miniature 
Tagged
copper  
Special Info
Type Locality 
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

Beautiful blue acicular crystals to about 0.5mm in 1-1.5mm clusters. This is a new IMA mineral published in 2013 by Russian mineralogists. This specimen has a dozen or so bright blue clusters. Excellent rich specimen.

It was described by a host of Russia's foremost mineralogist: Chukanov, N.V., Zubkova, N.V., Möhn, G., Pekov, I.V., Zadov, A.E. and Pushcharovsky, D.Y.  in 2013 in Mineralogical Magazine, 77, 2997-3005.


Chanabayaite

Special Info
Type Locality
Special Info
XRD Confirmed
Special Info
EDS Confirmed

Fluorapatite

#BN46099
Locality
Cerro de Mercado mine, Durango, Mexico 
Formula
Ca5(PO4)3
Availability
Sold
Size
5.5 x 5 x 3.5 cm - Sm Cabinet 
Tagged
phosphate  

Five nice translucent crystals of fluorapatite the largest to 1.2 cm.  Two of the crystals are terminated by pyramid faces.  The rest are truncated by the matrix.


Fluorapatite

Formula
Ca5(PO4)3
Crystal System
Hexagonal 
Crystal Habit
Massive - Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Resinous 
Color
blue, brown, colorless, violet, green 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Dr. Buford Nichols Collection

Franckeite

#BM41350
Locality
Siglo Viente mine, Llallagua, Bolivia 
Formula
Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14 
Availability
Sold
Size
6.5 x 5 x 5 cm - Sm Cabinet 
Tagged
sulfide , tin  

Dark silvery mass composed of compact platey Frankeite.  Minor Pyrite crystals to 8mm.  Frankeite is a rare tin mineral found in only two localities in the US.


Franckeite

Formula
Fe2+(Pb,Sn2+)6Sn4+2Sb3+2S14 
Crystal System
Triclinic 
Crystal Habit
Tabular, Massive - Fibrous, Radial 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
grayish black, blackish gray 
Streak
grayish black 
Class
Triclinic - Pinacoidal 
Fracture
Flexible 
Hardness
2.5 
Collection
Bill McConlogue Collection

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