Kotoite; Naljoduoye, Siberia, Russia; MM; unique piece
Kotoite from Naljoduoye, Siberia, Russia. Micromount as unique piece for mineral collectors.
Kotoite is a rare borate mineral belonging to the magnesium borates group. This unique specimen originates from Naljoduoye in Siberia, Russia—an area known for its geological diversity and exceptional mineral occurrences. With the chemical formula Mg₃(BO₃)₂, Kotoite is especially appealing to collectors focused on rare boron compounds and systematic collections.
The specimen features fine crystalline structures on a small matrix, best appreciated under a loupe or microscope. It typically appears colorless to pale gray or yellowish, often with a dull to vitreous luster. As a mineral of crystallographic and chemical interest, Kotoite attracts attention not only for its rarity but also for its role within the complex borate family.
Naljoduoye is one of the few known localities for Kotoite worldwide, making this piece even more exceptional. It is well suited for scientifically oriented mineral collections, educational institutions, or as a reference sample for academic research into borate mineralogy.
For mineral collectors with a focus on rare species and geologically important localities, this Kotoite specimen represents a significant addition. A valuable and authentic piece with confirmed provenance from Siberia, it combines scientific merit with collector appeal.
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) | 0.020000 |
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