Metavauxite xls; Llallagua, Bolivia; Gerd Tremmel collection; Min; unique piece
Metavauxite crystals from Llallagua, Bolivia, Gerd Tremmel collection – miniature specimen as unique piece
This miniature specimen displays abundant Metavauxite crystals in dense, surface-covering aggregates on matrix. The fine-crystalline coatings show a characteristic blue-green to turquoise color and nearly cover the entire surface. The crystals are clearly recognizable and form a lively, sparkling texture with fine prismatic to acicular development. Yellowish to ochre areas within the matrix provide an attractive color contrast and emphasize the natural formation of the piece.
The combination of vivid color, dense crystal coverage and classic locality makes this miniature specimen a highly appealing collector’s item, especially for enthusiasts of secondary phosphate minerals from Bolivia.
Geology & Origin
Llallagua in Bolivia is one of the world’s most important tin mining districts. The Metavauxite crystals formed there as secondary phosphate minerals within the oxidation zone of complex ore deposits. Weathering of primary sulfide minerals and the circulation of phosphate-bearing solutions led to the development of fine crystalline, often intensely colored coatings in cavities and fractures. The typical blue-green Metavauxite crystals from Llallagua are highly appreciated by collectors worldwide and are considered classic representatives of this paragenesis.
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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