Hausmannite, Baryte xls; N'Chwaning II Mine, Kalahari Manganese Field, South Africa; Min; unique piece
Hausmannite and Baryte crystals from the N'Chwaning II Mine, Kalahari Manganese Field, South Africa – miniature specimen as unique piece
This miniature specimen with Hausmannite and Baryte crystals from the N'Chwaning II Mine, Kalahari Manganese Field, South Africa was collected in 1997. The specimen shows numerous black Hausmannite crystals with a strong metallic luster densely developed across the matrix.
Several colorless to slightly beige Baryte crystals occur between the dark crystals and appear as tabular crystal forms. The transparent to translucent Baryte crystals stand out clearly against the lustrous Hausmannite crystals and give the specimen a varied and attractive crystal structure.
Geology & Origin
The N'Chwaning II Mine in the Kalahari Manganese Field is one of the most important localities worldwide for manganese minerals. The mineralization occurs in manganese rich sedimentary rocks that were later affected by hydrothermal processes. Hausmannite is a typical oxide mineral from this deposit and often forms well developed crystals. Baryte, a barium sulfate mineral, can crystallize in cavities of the mineral rich host rock where it commonly forms tabular to prismatic crystals.
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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