Hibonite crystals; Evisa, Madagascar; miniature specimen; unique piece
Hibonite crystals from Evisa, Madagascar
This specimen, approximately 3 cm in size, shows black, opaque crystals in a light, translucent matrix. The crystals stand out against the whitish-gray areas and the yellowish to orange-brown sections. Based on the scale, it is a smaller KS (miniature specimen).
Geology & Locality
Hibonite is a calcium- and aluminum-rich oxide mineral. Its type locality is at Esiva, Madagascar, where it was found in an eluvial deposit near thorianite-bearing skarns.
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 cm | Approx. ¼–¾ in |
| Min | Miniature specimen | will not fit a TN or MM box anymore | approx. 2.5-5 cm | Approx. 1–2 in |
| Scab | small cabinet specimen | approx. one-third to half a hand size | approx. 5-9 cm | Approx. 2–3½ in |
| Cab | cabinet specimen | full hand size | approx. 9-15 cm | Approx. 3½–6 in |
| large Cab | large cabinet specimen | approx. two hand sizes | approx. 15-30 cm | Approx. 6–12 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) | 0.040000 |
|---|