Museum Collection
This specimen is part of the museum collection catalog.
Not for Sale.
Olmiite / Bultfonteinite
South Africa
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| Classification |
Mineral |
| Tags |
Type Locality
Combination
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| Origin Location |
South Africa |
| Description |
This specimen features a combination of two rare mineral types which occur in South Africa, with Brown/Beige/Ochre colored and well terminated tiny cubic crystals interspecies with tiny shards of whitish material that is likely the Bultfonteinite, named for the Bultfontein mine where it was discovered. This material is associated with the Kimberlite pipes that transport rare minerals including Diamonds from deep in the earth. |
| Luster |
Dull |
| Luster (Groundmass) |
Not noted, see photo. |
| Optical Phenomena |
Not noted, see photo. |
| Mineral Group / Note |
Calcium Nesosilicate |
| Handling |
No special handling is required. |
| Modifications |
No modifications. |
| Size Group |
Miniature |
| Weight |
Not weighed precisely yet, please inquire. |
| Dimensions |
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| Quantity |
1 Specimen |
| Mineral List |
Olmiite: CaMn[SiO3(OH)](OH)
calcium manganese silicon trioxygen oxygen hydrogen hydroxide *
Bultfonteinite: Ca2SiO3(OH)F·H2O
calcium silicon trioxygen oxygen hydrogen fluorine hydrogen oxide *
* Formula chemical names are auto-generated - may be incorrect on complex formulas.
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Specimen Analysis |
Color Table
Colors found in this specimen image are shown below. Higher number indicates greater concentration of that color.
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Similarly Colored Minerals:
Minerals with similar color profiles are shown below.
How it Works
Quartz on Limestone Stalactite Copper (Native) Aragonite Dolomite var. Cobaltoan Aragonite Psilomelane |
Elements in this Specimen:
Elements that are part of the official chemical structure of the minerals occurring in this specimen are indicated below.
How it Works
Element List:
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Minerals with Similar Chemistry:
Minerals that are similar in terms of their chemical makeup are shown below.
How it Works
This Mineral Formula Similar Mineral Formula
Ca Mn Si O H Ca Mn Fe Si O H
Ca Mn Si O H Ba Ca Mn Si O H
Ca Mn Si O H Li Ca Mn Si O H
Ca Mn Si O H Ca Mn Fe Si O H
Ca Mn Si O H Ca Mn Mg Si O H
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Mineral Group:
Search the catalog for minerals that share the same group as this specimen:
How it Works
Structural Group(s):
Fleischers Group(s):
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| Tools |
Edit Specimen
Search Wikipedia: Olmiite (Wiki)
Search Mindat: Olmiite
Search Web Mineral DB: Olmiite
Search for Handbook of Mineralogy: Olmiite
Search Wikipedia: Bultfonteinite (Wiki)
Search Mindat: Bultfonteinite
Search Web Mineral DB: Bultfonteinite
Search for Handbook of Mineralogy: Bultfonteinite
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