Bayldonite, Wulfenite xls; Tsumeb Mine, Otavi Mountains, Namibia; Ilse Baer collection; TN; unique piece
Bayldonite and Wulfenite crystals from the Tsumeb Mine, Otavi Mountains, Namibia – micromount as unique piece
This micromount specimen with Bayldonite and Wulfenite crystals from the Tsumeb Mine, Otavi Mountains, Namibia was collected in 1983. The specimen displays a dense coating of bright green Bayldonite crystals covering large parts of the matrix and giving the surface a finely sparkling appearance.
Among the green Bayldonite crystals several yellow to orange Wulfenite crystals are present. Their tabular crystal form and vivid color create a strong visual contrast with the surrounding Bauldonite. The association of bright green Bayldonite crystals with the characteristic Wulfenite crystals forms an attractive mineral paragenesis typical for the oxidized zone of the Tsumeb deposit.
Geology & Origin
The Tsumeb Mine in the Otavi Mountains of Namibia is one of the most important mineral localities in the world and is famous for its exceptional diversity of secondary minerals. In the oxidized zone of the complex mineralized carbonate body, numerous copper, lead and arsenate minerals formed. Bayldonite is a rare lead copper arsenate from the Tsumeb deposit and commonly occurs as fine green crystal coatings. Wulfenite is a typical lead molybdate of the oxidation zone and forms characteristic tabular crystals in yellow to orange colors.
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) | 0.050000 |
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