Köttigite xls; Silbereckle Mine, Lahr, Black Forest, Germany; Cab; unique piece
Köttigite crystals from the Silbereckle Mine, Lahr, Black Forest, Germany – cabinet specimen as unique piece
This cabinet specimen displays impressively developed Köttigite crystals from the Silbereckle Mine near Lahr in the Black Forest, Germany. Dense, snow white to slightly silvery crystal coatings cover large parts of the surface and form a finely structured, needle like to fibrous texture with lively light reflections. The crystals are richly developed and give the specimen a distinct frost like appearance that contrasts beautifully with the brownish to grey matrix. The interplay between the bright crystal coverage and the darker host rock results in a well balanced and highly attractive overall presentation with strong collector appeal.
Geology & Origin
The Silbereckle Mine in the Black Forest is a classic locality for arsenate rich secondary minerals formed during the weathering of sulfide bearing ore veins. Köttigite crystallized here within the oxidation zone from zinc and arsenic rich solutions precipitating in fractures and cavities of the host rock. The locality is well known for its characteristic fine crystal coatings and represents one of the important German occurrences of this rare mineral.
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) | embeddet 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) | 0.500000 |
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