Boltwoodite xls; Goniakontes, Swakopmund, Namibia; Min; unique piece
Boltwoodite crystals from Goniakontes, Swakopmund, Namibia – miniature specimen as unique piece
This exceptional miniature specimen features bright yellow to orange Boltwoodite crystals within a small cavity. The crystals form spherical to radiating aggregates that contrast beautifully against the dark quartz matrix. Their vivid color and clearly visible crystal rosettes give the specimen strong visual appeal. The crystals are well developed and protected within the cavity of the host rock, creating an especially attractive display surface.
Geology & Origin
Boltwoodite is a rare hydrated potassium uranium silicate that forms as a secondary mineral during the alteration of uranium-bearing deposits. The Goniakontes area near Swakopmund in Namibia is known for its uranium mineral occurrences within the Erongo region and has produced numerous rare uranium minerals sought after by collectors and researchers. Oxidation of primary uranium minerals has led to the formation of colorful secondary species, including Boltwoodite. Because of its rarity and attractive crystal aggregates, Boltwoodite is considered a desirable uranium mineral among specialized collectors.
Legal notice: Boltwoodite contains uranium and is therefore radioactive. This mineral is intended exclusively for collecting, research and display purposes. Proper storage and responsible handling are recommended.
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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