aragonite (on zincolivenite)

TSNB446

Specimen

Exhibit 1. Aragonite (on zincolivenite); 84 mm.
Exhibit 1. Aragonite (on zincolivenite); 84 mm.
Image Credit: Malcolm Southwood
Exhibit 2. 40 mm field of view.
Exhibit 2. 40 mm field of view.
Image Credit: Malcolm Southwood
Exhibit 3. Specimen datacard (Mark Feinglos).
Exhibit 3. Specimen datacard (Mark Feinglos).
Image Credit: Malcolm Southwood
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Title

aragonite (on zincolivenite)

Principal Mineral

Aragonite

Size

Cabinet; 84mm

Location in the Mine

Third oxidation zone (?); 40 Level (?)

Collection

MGMH 2022.4.1153L

Provenance

Zweibel, J.; Feinglos, M.N.

Entry Type

Specimen TSNB446

Description

A sheared sulphide - quartz matrix with the display face encrusted with aggregates of equant, spearmint-green zincolivenite crystals extensively overgrown by tiny colourless, acicular aragonite crystals which, superficially, appear coloured because of the underlying arsenate.

A small vug on the display face (Exhibit 2) hints at a layer of a second apple-green arsenate, probably conichalcite-duftite (?), underlying the zincolivenite.

Formerly in the Mark Feinglos Collection (#1153), Feinglos purchased this specimen from Julius and Miriam Zweibel in February 1988. Zweibel's printed label has "40 Level" pencilled on it, and this location is repeated on Feinglos' data card (Exhibit 3) along with the information that the Zweibels bought the specimen in Tsumeb in December 1987.

Associated Minerals

conichalcite-duftite (?); zincolivenite