Wulfenite xls; Tsumeb Mine, Otavi Mountains, Namibia; Ilse Baer collection; Scab; unique piece
clear, yellow to pink xx on matrix.
Wulfenite crystals from the Tsumeb Mine, Otavi Mountains, Namibia – small cabinet specimen as unique piece
This cabinet-size specimen displays well-developed Wulfenite crystals from the world-famous Tsumeb Mine in the Otavi Mountains, Namibia. The crystals are predominantly tabular to blocky in habit and show intense honey-yellow to amber-brown coloration combined with a strong vitreous luster. Several crystals are intergrown, forming a complex and layered crystal structure that gives the specimen considerable visual depth. Dark inclusions and matrix areas provide additional contrast and emphasize the classic appearance of Wulfenite specimens from Tsumeb.
Geology & origin
Wulfenite is a secondary lead molybdate that forms in the oxidation zones of polymetallic ore deposits. The Tsumeb Mine is regarded as one of the most important mineral localities worldwide, renowned for its extraordinary mineral diversity and exceptionally well-developed crystals of numerous secondary minerals. The Wulfenite crystals shown here are a characteristic example of the mineralogical quality and classic paragenesis for which this locality is internationally known. The piece dates from before 1972.
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) | embeddet 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) | 0.100000 |
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