Willemite, Dolomite xls; Tsumeb Mine, Otavi Mountains, Namibia; Min; unique piece
clear, yellow to pink xx on matrix.
Willemite and Dolomite crystals from the Tsumeb Mine, Otavi Mountains, Namibia – miniature specimen as unique piece
This miniature specimen shows Willemite and Dolomite crystals from the Tsumeb Mine, Otavi Mountains, Namibia. Numerous rounded Willemite crystals in warm brownish red tones occur on a light carbonate matrix. The crystals are clearly developed and form compact, slightly raised aggregates with lively surface texture. Dolomite appears in light, finely crystalline areas between and around the Willemite crystals, creating a harmonious color contrast. The combination of both minerals gives the specimen a balanced and richly detailed appearance with well visible crystal development.
Geology & Origin
The Tsumeb Mine in Namibia is one of the world’s most important localities for an exceptional variety of primary and secondary ore minerals. Willemite is a zinc silicate that commonly formed in the oxidation zone of this complex polymetallic deposit. Dolomite is a widespread calcium magnesium carbonate occurring there both as a vein mineral and as part of the surrounding carbonate host rocks. The paragenesis shown here reflects the complex formation processes within the unique Tsumeb deposit.
This table is for general information and orientation, although the sizes of the stones may vary. In addition, this specification is handled differently from region to region.
| Sizes | Description | approx. Sizes in mm/cm | approx. Sizes in INCH | |
| Capsule | Capsule | 0.1–0.5 mm in a transparent hard capsule (approx. 1 cm) | capsule contents 0.1–0.5 mm | capsule contents 0.004–0.02 in |
| TN/mm | Micromount (TN = Thumbnail) | everything fitting in a TN Perky box or a MM box of approx. 1 in | approx. 0.5–2.5 cm | max. 1 in |
| Min | Miniature specimen | will not fit a TN or MM box anymore | approx. 2.5–5 cm | approx. 0.2–1.0 in |
| Scab | small cabinet specimen | approx. one-third to half a hand size | approx. 5–9 cm | approx. 1.0–2.0 in |
| Cab | cabinet specimen | full hand size | approx. 9–15 cm | approx. 2.0–3.5 in |
| large Cab | large cabinet specimen | approx. two hand sizes | approx. 15–30 cm | approx. 3.5–6.0 in |
| very large Cab | very large cabinet specimen | everything larger, no upper limit |
Abbreviations commonly used in mineralogy.
| Abbreviation | Meaning |
| xl | single crystal, possible with matrix |
| xls | noticeable crystals |
| (xl) | embedded or damaged |
| (xls) | embedded or damaged |
| MASS | massive and/or amorphous pieces |
| TYP | type locality of the original description |
| SWUV | shortwave-UV-reaction |
| UV | ultraviolet reaction |
| SC | self-collected |
| U | unique (single unique piece) |
Usage Instructions
This product is ideal as a collector's item, decorative element, teaching material, or for scientific and exhibition purposes.
Legal Notices
Safety
We accept no liability for damages resulting from improper and/or non-recommended use. Please carefully assess the suitability of the product before any alternative use.
Responsible Provider
Mikon Mineralienkontor GmbH
Steinslieth 11
D-37130 Gleichen OT Klein Lengden
Email: info@mikon-online.com
| shipment-weight, NOT netto weight (kg) | 0.080000 |
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