Dundasite, Azurite xls; Tsumeb Mine, Otavi Mountains, Namibia; Ilse Baer collection; Min; unique piece
Dundasite and Azurite crystals from the Tsumeb Mine, Otavi Mountains, Namibia Ilse Baer collection– small cabinet specimen as unique piece
This miniature specimen with Dundasite and Azurite crystals from the Tsumeb Mine, Otavi Mountains, Namibia originates from the Ilse Baer collection and was collected before 1972. The specimen shows a striking mineral association with intensely blue Azurite crystals developed along the surface of the matrix.
The Azurite crystals occur in small but clearly visible crystal groups with a strong deep blue color that contrasts strongly with the yellowish to brownish matrix. Fine crystalline to powdery coatings of Dundasite are present on and between these areas, adding additional texture and mineralogical interest to the specimen.
Geology & Origin
The Tsumeb Mine in the Otavi Mountains of Namibia is one of the most mineralogically important localities in the world. The deposit is particularly famous for its great diversity of secondary minerals from the oxidized zone of the complex mineralized carbonate body. Azurite is a typical copper carbonate from this zone and commonly forms intensely blue crystals. Dundasite is a rare lead aluminum carbonate hydroxide that typically occurs as fine crystalline coatings or crust-like mineral growths.
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) | 0.080000 |
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