Ettringite on Calcite
Ettringite on Calcite
N'Chwaning II Mine, Kalahari Manganese Field, Northern Cape, South Africa.
Size: 2.7 x 1.8 x 0.7 cm (Thumbnail)
The small specimen has an intergrown covering of ettringite crystals on a shallow intergrown crystallized mass of calcite. The calcite has a stepped sequence of aligned rhombic shapes making up the surface. The largest ettringite crystal measures 0.6cm in length.
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SKU:SAMS-334
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Mineral Sizing Guide
Understanding mineral sizes can help you choose the perfect specimen for your collection. Below is our guide to the standard size categories we use:
| Category |
Size |
Info |
| Thumbnail |
Up to 3 cm |
Thumbnails are small but well-formed mineral specimens that are perfect for display in thumbnail cases. |
| Miniature |
Up to 5 cm |
Great balance between size and detail - larger than thumbnails but still compact enough for easy storage and display. |
| Small-Cabinet |
Up to 9.4 cm |
Small-cabinet specimens offer larger crystal formations while still being easy to handle and display. |
| Cabinet |
Over 9.4 cm |
Ideal for prominent display pieces in a collection. Larger crystal formations and structure. |
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