Descloizite xls; Tsumeb Mine, Otavi Mountains, Namibia; Gerd Tremmel collection; 3 TN; unique piece
Descloizite crystals from the Tsumeb Mine, Otavi Mountains, Namibia, Gerd Tremmel collection – 3 micromounts as unique piece
This lot consists of three micromounts with Descloizite crystals from the Tsumeb Mine. The crystals display the characteristic brown to reddish-brown coloration typical of Descloizite and are each attached to small, light-colored matrix remnants. Despite their small size, the crystal aggregates are clearly recognizable and show a compact, well-defined appearance. The combination of documented provenance and classic habit makes these micromounts especially attractive for systematic collections of rare vanadate minerals.
Geology & Origin
The Tsumeb Mine in the Otavi Mountains, Namibia, is renowned worldwide for its exceptional diversity of secondary oxidation minerals. Descloizite forms there in the oxidation zone of lead-bearing ores under vanadium-rich conditions. Analytically confirmed and early collected specimens from historic collections, such as the Gerd Tremmel collection, are of particular scientific and collector interest, documenting classic formation processes of this unique 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) | 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) | 0.050000 |
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