Talmessite (w. calcite)

TSNB531
Specimen
Belsher, D.Bunk, D.Pinch, W.W.
Exhibit 1. Talmessite (on calcite); 50 mm.
Exhibit 1. Talmessite (on calcite); 50 mm.
Image Credit: RRUFF Database Project (Lafuente et al. 2015; RRUFF ID 080007)
Exhibit 2. 9 mm field of view
Exhibit 2. 9 mm field of view
Image Credit: RRUFF Database Project (Lafuente et al. 2015; RRUFF ID 080007)
Exhibit 3. Specimen label (Dave Bunk).
Exhibit 3. Specimen label (Dave Bunk).
Image Credit: Malcolm Southwood
Exhibit 4. Specimen label (Bill Pinch).
Exhibit 4. Specimen label (Bill Pinch).
Image Credit: Malcolm Southwood
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Specimen Title

Talmessite (w. calcite)

Associated Minerals

calcite

Principal Mineral

Talmessite

Size

Miniature; 50mm

Location in the Mine

Undetermined

Provenance

Belsher, D.; Bunk, D.; Pinch, W.W.

Collection

MGMH; 2020.7.775

Entry Number

Specimen; TSNB531

Description

Pale yellow crystals of talmessite (to 10 mm) on colourless-white calcite (exhibits 1 and 2). The talmessite occurs as near-parallel intergrowths of tabular crystals (Exhibit 2) and has been verified by single crystal XRD and by chemical analysis (EMPA).

The specimen is from the collection of Bill Pinch, who purchased it from dealer Dave Bunk (Exhibit 3); it belonged formerly to Don Belsher. The location in the mine is not recorded.

Pinch's label (Exhibit 4) indicates that the specimen was used for determination of the unit cell parameters for talmessite. The specimen is included in the RRUFF database (RRUFF ID R080007); analytical data is available at https://rruff.info/talmessite/display=default/R080007 (accessed November 2024).