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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![Colemanite / Ulexite](/Files/Minerals/Colemanite_1242_0_lg.jpg)
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Close up on the Ulexite ![Close up on the Ulexite](/Files/Minerals/ColemaniteUlexite_1242_CloseupontheUlexite_sm.jpg) |
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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 (hydrous) *
Ulexite: NaCaB5O6(OH)6·5H2O sodium calcium pentaboron hexoxygen oxygen hydrogen (hydrous) *
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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![Quartz & Hematite var. Iron Rose](/Files/Minerals/QuartzHematitevarIronRose_953_0_sm.jpg) Rutile / Pyrophyllite![Rutile / Pyrophyllite](/Files/Minerals/_1525_0_sm.jpg) Acanthite![Acanthite](/Files/Minerals/Acanthite_1467_0_sm.jpg) Quartz / Pyrolusite / Goethite![Quartz / Pyrolusite / Goethite](/Files/Minerals/QuartzPyrolusiteGoethite_1456_0_sm.jpg) Enstatite var. Bronzite![Enstatite var. Bronzite](/Files/Minerals/EnstatitevarBronzite_1532_0_sm.jpg) Coral var. Stag Coral![Coral var. Stag Coral](/Files/Minerals/CoralvarStagCoral_961_0_sm.jpg) |
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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