Defernite (xls); Kombat Mine, Otavi, Namibia; Scab; unique piece
Embedded Defernite crystlas from the Kombat Mine, Otavi, Namibia – small cabinet specimen as unique piece
This small cabinet specimen features embedded Defernite crystals from the Kombat Mine in the Otavi region of Namibia. The piece presents a dark, slightly metallic shimmering matrix with numerous brown to bronze colored crystal areas embedded throughout. The surface appears dense and finely crystalline, creating a lively interplay of luster and texture.
The Defernite crystals are clearly recognizable as embedded, elongated to irregular crystal sections. They show a characteristic metallic to resinous luster and stand out distinctly from the darker matrix. Despite their embedded nature, the crystal forms are well traceable and give the specimen a strong and mineralogically interesting appearance.
Geology & Origin
Defernite is a rare iron arsenate mineral that typically forms in the oxidized zones of complex ore deposits. It develops as a secondary mineral through the alteration of primary sulfide minerals under the influence of oxygen and circulating solutions.
The Kombat Mine in the Otavi Mountains is a classic locality in Namibia, known for a wide variety of rare and collectible minerals. The deposit is especially notable for its complex parageneses formed under diverse 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) | 0.100000 |
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