Devilline, Linarite xls; Tsumeb Mine, Otavi Mountains, Namibia; TN; unique piece
Devilline and Linarite crystals from the Tsumeb Mine, Otavi Mountains, Namibia – micromount as unique piece
This micromount specimen with Devilline and Linarite crystals from the Tsumeb Mine, Otavi Mountains, Namibia was collected before 1987. The specimen displays a dark matrix covered by intensely blue crystal formations that create a striking color contrast.
The crystals occur in fine, densely packed aggregates forming a sparkling crystalline coating across the surface of the specimen. The deep blue color of the Linarite crystals contrasts clearly with the lighter blue green areas of Devilline, producing a particularly attractive mineral association typical for the oxidized zone of the deposit.
Geology & Origin
The Tsumeb Mine in the Otavi Mountains of Namibia is one of the most mineralogically important deposits in the world. In the oxidized zone of the complex mineralized carbonate body, numerous secondary copper, lead and sulfate minerals formed. Linarite is a basic lead copper sulfate well known for its intense blue crystals. Devilline is a hydrated copper sulfate mineral that commonly occurs as fine crystalline coatings or small crystal aggregates associated with other secondary copper minerals.
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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