Museum Collection
This specimen is part of the museum collection catalog.
Not for Sale.
Colemanite / Ulexite
Rio Tinto Mine, Kern Co., CA, USA
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Close up on the Ulexite  |
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| Classification |
Mineral |
| Tags |
Combination
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| Origin Location |
Rio Tinto Mine, Kern Co., CA, USA |
| Description |
An unusual example of well crystallized colemanite abundantly coating a mass of slightly greenish asbestifrom ulexite. These two borate minerals are important commercial sources of sodium borate, a naturally occurring salt that is widely used in cleaning and laundry products. |
| Luster |
Vitreous |
| Luster (Groundmass) |
Not noted, see photo. |
| Optical Phenomena |
Not noted, see photo. |
| Mineral Group / Note |
Not noted, check reference links below. |
| Handling |
No special handling is required. |
| Modifications |
No modifications. |
| Size Group |
Medium Cabinet |
| Weight |
Not weighed precisely yet, please inquire. |
| Dimensions |
Not measured precisely yet, please inquire. |
| Quantity |
1 Specimen |
| Mineral List |
Colemanite: CaB3O4(OH)3·H2O
calcium triboron tetroxygen oxygen trihydrogen hydrogen oxide *
Ulexite: NaCaB5O6(OH)6·5H2O
sodium calcium pentaboron hexoxygen oxygen hydrogen 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 & Hematite var. Iron Rose Rutile / Pyrophyllite Acanthite Quartz / Pyrolusite / Goethite Enstatite var. Bronzite Coral var. Stag Coral |
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
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Mineral Group:
Search the catalog for minerals that share the same group as this specimen:
How it Works
Fleischers Group(s):
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| Tools |
Edit Specimen
Search Wikipedia: Colemanite (Wiki)
Search Mindat: Colemanite
Search Web Mineral DB: Colemanite
Search for Handbook of Mineralogy: Colemanite
Search Wikipedia: Ulexite (Wiki)
Search Mindat: Ulexite
Search Web Mineral DB: Ulexite
Search for Handbook of Mineralogy: Ulexite
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