duftite after mimetite (?) (w. cerussite)

TSNB431

Pseudomorph

Exhibit 1. Duftite after mimetite (?) (w. cerussite); 42 mm.
Exhibit 1. Duftite after mimetite (?) (w. cerussite); 42 mm.
Image Credit: Malcolm Southwood
Exhibit 2. Analytical data; duftite. (M. Southwood and P. Carr; unpublished).
Exhibit 2. Analytical data; duftite. (M. Southwood and P. Carr; unpublished).
Image Credit: Malcolm Southwood
Exhibit 3. Analytical data. Duftite on this specimen (blue circles) is calcium rich.
Exhibit 3. Analytical data. Duftite on this specimen (blue circles) is calcium rich.
Image Credit: Malcolm Southwood
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Title

duftite after mimetite (?) (w. cerussite)

Principal Mineral

Duftite

Size

Miniature; 42mm

Collection

Southwood, M. MS2005.038

Provenance

Shelton, B.

Entry Type

Pseudomorph TSNB431

Description

Hollow epimorphs (to 8 mm) of moss-green duftite, probably after mimetite (?). Colourless twinned crystals of cerussite (to 4 mm) have grown between the epimorphs, and both the duftite surfaces and the cerussite are sparsely frosted with tiny rhombs of calcite.

WDS analysis confirmed that the duftite is Ca-rich (Exhibits 2 and 3).

The specimen was purchased from Cyril Kovac in 2005 and was formerly in the collection of Brian Shelton (Melbourne, Australia).

Associated Minerals

calcite; cerussite