howlite
Sign in to saveHowlite, a calcium borosilicate hydroxide (Ca2B5SiO9(OH)5), is a borate mineral found in evaporite deposits.
In the Vinony graph
Vinony's link graph records 177 inbound references to howlite, and connects out to borate class of minerals, Mohs scale of mineral hardness and gold.
Vinony files it under Inoborates, Minerals in space group 14 and Monoclinic minerals.
Vinony links it to 13 Wikipedia language editions.
Key facts
- Mineral.name
- Howlite
- Mineral.category
- Inoborates
- Mineral.image
- Howlite.jpg
- Mineral.imagesize
- 260px
- Mineral.formula
- Ca2B5SiO9(OH)5
- Mineral.IMAsymbol
- How
- Mineral.strunz
- 6.CB.20
- Mineral.dana
- 25.3.5.1
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- P21/c
- Mineral.unit cell
- a = 12.82 Å, b = 9.351(1) Å c = 8.608(2) Å; β = 104.84(2)°; Z = 4
- Mineral.color
- White, colorless
- Mineral.habit
- Massive to nodular, occurs as tabular prisms flattened parallel to [100]
- Mineral.cleavage
- None
- Mineral.fracture
- Conchoidal, uneven
- Mineral.mohs
- 3.5
- Mineral.luster
- Subvitreous, glimmering
via Wikipedia infobox
Wikidata facts
- Image
- Howlite - tumble polished stone.jpg
Show 8 more facts
- Strunz 8th edition (series ID, updated)
- VIII/A’.13
- Commons category
- Howlite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 6.CB.20
- Nickel-Strunz 9th edition (updated 2009)
- 6.CB.20
- streak color
- white
- crystal system
- monoclinic crystal system
- IMA Mineral Symbol
- How
- chemical formula
- Ca₂B₅SiO₉(OH)₅
Sources (1)
via Wikidata · CC0
~4 min read
Encyclopedic overview
7 sectionsContents
- History
- Geology
- Jewelry
- Gallery
- See also
- References
- Bibliography
Howlite, a calcium borosilicate hydroxide (Ca2B5SiO9(OH)5), is a borate mineral found in evaporite deposits.
== History == Howlite was discovered near Windsor, Nova Scotia, in 1868 by Henry How (1828–1879), a Canadian chemist, geologist, and mineralogist. How was alerted to the unknown mineral by miners in a gypsum quarry, who found it to be a nuisance. He called the new mineral silico-boro-calcite; it was given the name howlite by the American geologist James Dwight Dana shortly thereafter.
Excerpted from Wikipedia’s “howlite” article, available under the CC BY-SA 4.0 licence.