Bixbyite xls; N'Chwaning III Mine, Kalahari Manganese Field, South Africa; Min; unique piece
Bixbyite crystals from the N'Chwaning III Mine, Kalahari Manganese Field, South Africa – miniature specimen as unique piece
This miniature specimen features Bixbyite crystals from the N'Chwaning III Mine, Kalahari Manganese Field, South Africa, collected in 2011. The piece displays a dense, surface-covering formation of numerous sharply defined crystals in deep black to dark grey tones. The crystals are well developed and reflect light with a metallic luster, creating a sparkling and highly detailed overall appearance.
Geologie & Herkunft
Bixbyite is a manganese oxide that forms in manganese-rich deposits under oxidizing conditions and commonly occurs in association with other manganese minerals. It develops within complex hydrothermal systems where manganese crystallizes from mineral-rich fluids. The N'Chwaning III Mine in the Kalahari Manganese Field in South Africa is one of the most important localities worldwide and is renowned for its well-formed Bixbyite crystals and exceptional mineral diversity.
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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