Azurite (w. malachite)

TSNB409
Specimen
Palache, C.
Exhibit 1. Azurite (w. malachite); 55 mm.
Exhibit 1. Azurite (w. malachite); 55 mm.
Image Credit: Malcolm Southwood
Image of undefined

Image Credit: Malcolm Southwood
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Specimen Title

Azurite (w. malachite)

Associated Minerals

malachite

Principal Mineral

Azurite

Size

Cabinet; 55mm

Location in the Mine

First oxidation zone

Provenance

Palache, C.

Collection

MGMH; 87493

Entry Number

Specimen; TSNB409

Description

This specimen is from a large collection of minerals purchased by Charles Palache during his 1922 visit to Tsumeb. It was later used as the frontispiece for the Palache and Lewis (1927) azurite monograph and was the first colour image to be published in American Mineralogist. Interestingly, the photo was published in mirror image, presumably an easily committed error in the days of photographic negatives.

Palache and Lewis (1927) described the specimen as "Three azurite crystals from Tsumeb, in parallel position, altering to malachite. The concentric structure of the invading malachite fibers is well shown." A little yellowish arsenate-rich matrix material adheres but this has not been analysed. Exhibit 2 shows the reverse of the specimen.