Pseudomorphs

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Arsentsumebite, (after Azurite)

Arsentsumebite, (after Azurite)

Minerals: Arsentsumebite, Azurite Abundance:
This specimen was originally in the collection of Carl Bosch (1874-1940), which was sold to the Smithsonian in 1966. The USNM label (# B17845) states...
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Arsentsumebite, (after Mimetite)

Arsentsumebite, (after Mimetite)

Minerals: Arsentsumebite, Mimetite Abundance:
Prismatic, hexagonal pseudomorphs of arsentsumebite after mimetite, on a matrix that is also rich in arsentsumebite (?), possibly in association with...
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Arsentsumebite, (after Mimetite)

Arsentsumebite, (after Mimetite)

Minerals: Arsentsumebite, Mimetite Abundance:
A typical first oxidation zone specimen, comprising hollow arsentsumebite epimorphs after mimetite (to 9 mm), with pseudomorphs of malachite after...
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Malachite, (after Azurite)

Malachite, (after Azurite)

Minerals: Azurite, Malachite Abundance:
Pseudomorphs of malachite after azurite (to c .10 mm) and smaller, second-generation crystals of unaltered azurite, on a matrix of copper arsenates,...
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Malachite, (after Azurite)

Malachite, (after Azurite)

Minerals: Azurite, Malachite Abundance:
Malachite pseudomorphs, after sharp, terminated azurite prisms (to 16 mm) on matrix. (FOV for the close-up photograph is 40 mm.) This specimen was...
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Arsentsumebite, (after Mimetite)

Arsentsumebite, (after Mimetite)

Minerals: Arsentsumebite, Mimetite Abundance:
Bright green pseudomorphs of arsentsumebite after mimetite occurred in considerable abundance, but only in the upper levels of the...
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Duftite (after Mimetite)

Duftite (after Mimetite)

Minerals: Duftite, Mimetite Abundance:
Bright-green pseudomorphs of duftite (XRD-verified) after mimetite .  These replacements are overgrown by a crust of colourless ,...
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Dolomite, (after Calcite)

Dolomite, (after Calcite)

Minerals: Calcite, Dolomite Abundance:
Pale-pink cobaltian (?) dolomite, pseudomorphous after calcite.  The uppermost crystal in the group measures 55 mm across, and clearly...
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Dolomite, (after Calcite)

Dolomite, (after Calcite)

Minerals: Calcite, Dolomite Abundance:
Pale-pink cobaltian (?) dolomite, pseudomorphous after calcite.  The calcite in this specimen was in the form of stacks of lenticular...
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Brochantite, (after Azurite)

Brochantite, (after Azurite)

Minerals: Azurite, Brochantite Abundance:
This intriguing specimen is a pseudomorph of brochantite (analytically verified) after what was probably azurite (?), on a matrix that appears to...
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