Rosasite (on dolomite, w. goethite)

TSNB616
Specimen
Feinglos, M.N.Zweibel, J.
Exhibit 1. Rosasite (on dolomite, w. goethite); 31 mm.
Exhibit 1. Rosasite (on dolomite, w. goethite); 31 mm.
Image Credit: Malcolm Southwood
Exhibit 2. Specimen label (Julius Zweibel).
Exhibit 2. Specimen label (Julius Zweibel).
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Specimen Title

Rosasite (on dolomite, w. goethite)

Associated Minerals

calcite; conichalcite-duftite; dolomite; goethite

Principal Mineral

Rosasite

Size

Miniature; 31mm

Location in the Mine

Third oxidation zone; 44 Level

Provenance

Zweibel, J.; Feinglos, M.N.

Collection

MGMH; 2022.4.4407L

Entry Number

Specimen; TSNB616

Description

Small sprays (to 2 mm) of blue-green rosasite microcrystals (individually circa 0.2 mm), on pearlescent white dolomite, with botryoidal goethite and an earlier layer of calcite over conichalcite-duftite (?).

Mark Feinglos purchased the specimen from Julius Zweibel in February 1990; Zweibel's label (Exhibit 2) indicates that it is from 44 Level in the third oxidation zone.