Beraunite xls; Rotläufchen Mine, Walgirmes, Germany; Gerd Tremmel collection; Scab; unique piece
Beraunite crystals from the Rotläufchen Mine, Walgirmes, Germany, Gerd Tremmel collection – small cabinet specimen as unique piece
This small cabinet specimen with Beraunite crystals from the Rotläufchen Mine near Walgirmes, Germany, originates from the Gerd Tremmel collection and represents a typical example of this rare iron phosphate mineral. The Beraunite crystals occur as fine, mostly dark brown to reddish brown aggregates irregularly distributed across the surface of the matrix.
The crystals are predominantly fine crystalline to crusty coatings with locally more compact development. The matrix shows a strong rusty brown to dark brown weathered structure with partly earthy and partly more compact areas. The crystals form an irregularly structured, matte surface and give the specimen an authentic natural appearance with distinct character.
Geology & Origin
The Rotläufchen Mine near Walgirmes is a classic locality for secondary iron phosphates in Germany. The mineralization formed through weathering and oxidation processes of iron rich rocks, producing a variety of secondary phosphate minerals. Beraunite is a typical product of these processes and commonly occurs as fine crusty coatings within the oxidation zone. The locality is known for its diversity of phosphate minerals.
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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