D'Achiardite xls; Grotta d'Oggi, Elba, Italy; Min; unique piece
D'Achiardite crystals from Grotta d'Oggi, Elba, Italy – miniature specimen as unique piece
This small miniature specimen shows D’Achiardite crystals from Grotta d’Oggi, Elba, Italy. The piece features an attractive combination of light, partly translucent crystal aggregates on a pale matrix, accompanied by contrasting dark, lustrous mineral areas. The crystals appear well developed and create a lively and detailed surface.
The D’Achiardite crystals are clearly visible and form fine, partly glassy structures distributed across the matrix. Together with the dark associated minerals, this results in a visually appealing specimen with strong contrasts and an interesting paragenesis.
Geology & Origin
D’Achiardite is a rare borate mineral that typically forms in hydrothermal environments. It commonly occurs in complex mineral assemblages formed from boron rich solutions.
Elba Island in Italy is a classic locality for a wide range of rare and aesthetically appealing minerals. The deposits around Grotta d’Oggi are especially known for their diversity of borate minerals and well formed crystals, making them highly significant for both collectors and scientific study.
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) | 0.080000 |
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