Draft:Calcioveatchite
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| Calcioveatchite | |
|---|---|
| General | |
| Category | Borates |
| Formula | SrCaB11O16(OH)5·H2O |
| Space group | Monoclinic |
| Identification | |
| Color | Colorless |
| Crystal habit | Prismatic to tabular crystals, dense aggregates |
| Cleavage | Perfect |
| Fracture | Brittle |
| Mohs scale hardness | 2 |
| Luster | Vitreous |
| Streak | White |
| Diaphaneity | Transparent |
| Density | 2.58 g/cm³ |
Calcioveatchite is a rare strontium calcium borate mineral with the chemical formula SrCaB11O16(OH)5·H2O.[1] It is the calcium dominant analogue of veatchite.[1]
Discovery and occurrence
[edit]The mineral was discovered at a depth of 911 meters in drill cores from the Nepskoe potassium salt deposit in the Irkutsk Oblast region of Siberia, Russia.[1][2] It occurs within evaporite rock formations, often associated with halite, sylvite, boracite, and veatchite.[1] It was officially approved by the International Mineralogical Association (IMA) in 2020 under the code IMA2020-011.[1]
Properties
[edit]Calcioveatchite forms small, colorless, transparent crystals up to 1 × 1.5 × 3 mm³ in size.[1] It has a vitreous (glassy) luster and a white streak.[1] With a Mohs hardness of approximately 2, it is a relatively soft and brittle mineral.[1] It crystallizes in the monoclinic crystal system and is entirely non-fluorescent under ultraviolet light.[1][3]
References
[edit]- 1 2 3 4 5 6 7 8 9 "Calcioveatchite". Mindat.org.
- ↑ "A New Mineral Calcioveatchite". mdpi.com.
- ↑ "New Mineral Names". geoscienceworld.org.