Zincroselite xls; Tsumeb Mine, Otavi Mountains, Namibia; Gerd Tremmel collection; capsule; unique piece
Zincroselite crystals from the Tsumeb Mine, Otavi Mountains, Namibia, Gerd Tremmel collection – capsule as unique piece
This capsule contains a crystal identified as Zincroselite from the Tsumeb Mine, Otavi Mountains, Namibia, from the Gerd Tremmel collection. The specimen shows an elongated prismatic crystal with well defined shape and rounded terminations, displaying a vitreous to slightly greasy luster. The surface appears smooth to slightly dull with subtle internal inclusions. The crystal morphology is clearly developed and presented as an individual crystal within the collector’s capsule.
Please note: The identification as Zincroselite is marked with a question mark. A definitive determination may require further analytical methods such as chemical analysis or X ray diffraction.
Geology & Origin
Zincroselite belongs to the Roselite group, a series of hydrated cobalt, zinc and calcium arsenates that form secondarily in the oxidation zone of arsenic bearing deposits. The Tsumeb Mine is world famous for its exceptional diversity of arsenates and complex secondary minerals. In the oxidized zones of this polymetallic deposit, numerous rare arsenate minerals formed under varying geochemical conditions.
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) | 0.020000 |
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