Everything about Lepidocrocite totally explained
Lepidocrocite (γ-FeO(OH)), also called
esmeraldite or
hydrohematite, is an
iron oxide-hydroxide mineral. Lepidocrocite has an
orthorhombic crystal structure, a
hardness of 5,
specific gravity of 4, a submetallic
luster and a yellow-brown streak. It is red to reddish brown and forms when
iron-containing substances
rust underwater. Lepidocrocite is commonly found in the
weathering of primary iron minerals and in
iron ore deposits. It can be seen as rust scale inside old
steel water pipes and water tanks.
The structure of lepidocrocite is similar to the
boehmite structure found in
bauxite and consists of layered iron(III) oxide octahedra bonded by
hydrogen bonding via
hydroxide layers. This relatively weakly bonded layering accounts for the
scaley habit of the mineral.
It was first described in 1813 from the Zlaté Hory
polymetallic ore deposit in
Moravia,
Czech Republic. The name is from the
Greek lipis for
scale and
krokis for
fibre.
Further Information
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