Trechmannite, Orpiment xls; Lengenbach Mine, Binntal, Valais, Switzerland; Min; unique piece
Trechmannite and Orpiment crystals from the Lengenbach Quarry, Binntal, Valais, Switzerland – miniature specimen as unique piece
This miniature specimen from the Lengenbach Quarry combines Trechmannite with Auripigment on a light-colored matrix. The vivid orange to yellow areas of Auripigment create strong visual highlights and contrast clearly with the pale, fine-grained host rock. Trechmannite occurs locally in close association, adding both mineralogical and aesthetic interest. Despite its small size, the specimen appears well balanced and expressive, making it suitable for specialized Lengenbach collections as well as systematic collections of rare sulfosalts. The specimen originates from find L-26426 collected in 1995 and represents a well-documented single specimen.
Geology & Origin
The Lengenbach Quarry in the Binntal is internationally renowned for its exceptional diversity of sulfosalt minerals. Trechmannite and Auripigment form there under highly specific geochemical conditions within dolomite veins enriched in arsenic, sulfur, and other metals. These complex formation processes result in a wide range of rare mineral associations. Specimens from this classic locality are highly regarded by collectors and researchers worldwide.
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) | 0.080000 |
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