ferroselite
Sign in to saveOrthorhombic ferroselite and its isometric polymorph dzharkenite are iron selenides of general formula FeSe2 precipitated under reducing conditions in anoxic environments. They are a source of selenium in the Rocky Mountains where selenium occurrence is associated with Upper Cretaceous shale deposits.
Key facts
- Mineral.name
- Ferroselite/Dzharkenite
- Mineral.category
- Selenide mineral
- Mineral.image
- Ferroselite.jpg
- Mineral.imagesize
- 260
- Mineral.caption
- Ferroselite found in Argentina
- Mineral.formula
- FeSe2
- Mineral.IMAsymbol
- Fse
- Mineral.strunz
- 2.EB.10a
- Mineral.color
- Steel-gray to tin-white with a rose tint, brass yellow
- Mineral.habit
- Acicular prismatic
- Mineral.system
- Orthorhombic
- Mineral.symmetry
- Pnnm (no. 58)
- Mineral.twinning
- Stellate and cruciform twins common
- Mineral.mohs
- 6 – 6.5
- Mineral.luster
- Metallic
- Mineral.refractive
- Opaque
- Mineral.pleochroism
- Distinct
- Mineral.streak
- Black
via Wikipedia infobox
Wikidata facts
- Image
- Ferroselite.jpg
Show 6 more facts
- chemical formula
- FeSe₂
- Nickel-Strunz 9th edition (updated 2009)
- 2.EB.10a
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 2.EB.10a
- Commons category
- Ferroselite
- IMA Mineral Symbol
- Fse
- Strunz 8th edition (series ID, updated)
- II/C.07
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Article
4 sectionsContents
- Names
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- References
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Orthorhombic ferroselite and its isometric polymorph dzharkenite are iron selenides of general formula FeSe2 precipitated under reducing conditions in anoxic environments. They are a source of selenium in the Rocky Mountains where selenium occurrence is associated with Upper Cretaceous shale deposits.
In the frame of safety assessment calculations made for deep disposal of high-level radioactive waste, ferroselite and dzharkenite are also considered in geochemical calculations as one of the mineral phases limiting the solubility of Selenium-79.