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Bournonite (“cogwheel”-esque twins)
Bournonite (“cogwheel”-esque twins) Bournonite (“cogwheel”-esque twins) Bournonite (“cogwheel”-esque twins)
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Bournonite (“cogwheel”-esque twins) (Ref: 821514101)

Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
29mm x 22mm x 19mm
minID: QFH-MM7
$252
A hard to find cogwheel-esque group of sharp, fairly thick, blocky modified twinned crystals of Bournonite with excellent luster and aesthetics. The piece would be classified as a large thumbnail / small toenail, and displays well from several angles (my favorite being the last picture). The stacke
Data last checked on 23rd Aug 2021 - specimen may no longer be available

From: Mineral Classics
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See Also

Bournonite (“cogwheels”)
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$271
37mm x 20mm x 12mm
From: Mineral Classics
Bournonite on Quartz
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$232
62mm x 54mm x 32mm
From: Mineral Classics
Bournonite
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$290
31mm x 30mm x 19mm
From: Mineral Classics
Bournonite on Quartz
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$174
29mm x 16mm x 15mm
From: Mineral Classics
Bournonite
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$387
42mm x 26mm x 25mm
From: Mineral Classics
Bournonite (“cogwheel”) on matrix
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$97
91mm x 47mm x 38mm
From: Mineral Classics
Bournonite
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$465
34mm x 25mm x 4mm
From: Mineral Classics
Bournonite (unique specimen)
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$619
103mm x 65mm x 27mm
From: Mineral Classics
Bournonite (excellent “cogwheel”) on Pyrite
Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$736
40mm x 27mm x 17mm
From: Mineral Classics
Bournonite
Viboras mine, Machacamarca, Potosi, Bolivia
$215
50mm x 50mm x 30mm
From: Weinrich Minerals
Bournonite (“cogwheel”)
Viboras Mine, Machacamarca, Potosi Department, Bolivia" />
$136
22mm x 17mm x 10mm
From: Mineral Classics
Bournonite
quartz and pyrite - Machacamarca - Machacamarca distr. - Cornelio Saavedra prov. - Potosí deptm - Bolivia
$158 *
61mm x 26mm x 42mm
From: Minservice.com
Bournonite with Galena and Pyrite
Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru
$446 *
55mm x 41mm x 47mm
From: Fabre Minerals
Vivianite on matrix
Tomokoni adit, Canutillos Mine, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$310
32mm x 16mm x 13mm
From: Mineral Classics
Vivianite (doubly-terminated) on matrix
Tomokoni adit, Canutillos Mine, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
$310
47mm x 42mm x 13mm
From: Mineral Classics
* price is an approximate conversion and may not be accurate.

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