Colorado Gem & Mineral Co. - Rocks for the Rest of Us

Dongchuan District, Kuming Prefecture, Yunnan Province, China

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Pyrite Concretion
L: 2.00in
W: 1.50in
H: 1.50in
Weight: 0.00
Bands of pyrite in black shale concretion. ..
$50.00
Pyrite Concretion
L: 4.00in
W: 2.50in
H: 2.50in
Weight: 0.00
Very large concretion with distinct layers of pyrite crystals. How these formed is really unique. Bu..
$110.00
Pyrite Concretion
L: 1.75in
W: 1.25in
H: 1.25in
Weight: 0.00
Perfect egg shape black shale/pyrite concretion. Natural geologic feature of pyrite in black shale c..
$60.00
Pyrite Concretion
L: 3.25in
W: 2.00in
H: 2.00in
Weight: 0.00
Bizarre duck head shaped black shale with pyrite portion at top. Bottom portion is black shale with ..
$85.00
Pyrite Concretion
L: 3.00in
W: 2.00in
H: 2.00in
Weight: 0.00
Natural geologic feature of pyrite in black shale concretion. These concretions are found in sizes a..
$95.00
Pyrite Concretion
L: 2.50in
W: 2.00in
H: 1.50in
Weight: 0.00
Natural geologic feature of pyrite in black shale concretion. These concretions are found in sizes a..
$70.00
Pyrite Concretion
L: 2.00in
W: 1.75in
H: 0.00in
Weight: 0.00kg
Near perfect sphere, natural black shale and pyrite concretion formed in ancient sea floor mud. ..
$50.00
Pyrite Concretion
L: 2.75in
W: 2.00in
H: 2.00in
Weight: 0.00
Egg shaped concretion, pyrite and black shale...
$70.00
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