malachite after azurite (w. calcite and cerussite)

TSNB483
Specimen
Exhibit 1. Malachite after azurite (w. calcite and cerussite); 71 mm.
Exhibit 1. Malachite after azurite (w. calcite and cerussite); 71 mm.
Image Credit: Mariusz Oleszczuk
Exhibit 2. 30 mm field of view.
Exhibit 2. 30 mm field of view.
Image Credit: Mariusz Oleszczuk
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Specimen Title

malachite after azurite (w. calcite and cerussite)

Associated Minerals

calcite; cerussite; conichalcite-duftite; cuprite

Principal Mineral

Malachite

Precursor Mineral

Azurite

Size

Cabinet; 71mm

Provenance

(not assigned)

Collection

Oleszczuk, M.; MLC86

Entry Number

Specimen; TSNB483

Description

A radiating group of elongated tabular azurite crystals, completely altered to malachite, decorated with aggregates of both calcite and cerussite crystals, many of which are coloured red by inclusions of microcrystalline cuprite (var. chalcotrichite). Fibrous crystals of non-pseudomorphous malachite are present between the pseudomorphs, with minor conichalcite-duftite associated (visually identified).

Neither the provenance nor the locaition in the mine is recorded.