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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Ehrenwerthite

A variety of Goethite
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Formula:
α-Fe3+O(OH)
Name:
For J. von Ehrenwerth
A name for goethite pseudomorphs after pyrite.


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Unique IdentifiersHide

Mindat ID:
26603 (as Ehrenwerthite)
1719 (as Goethite)
Long-form identifier:
mindat:1:1:26603:7 (as Ehrenwerthite)
mindat:1:1:1719:6 (as Goethite)

Similar NamesHide

Chemistry of EhrenwerthiteHide

Mindat Formula:
α-Fe3+O(OH)
Element Weights:
Element% weight
O96.946 %
H3.054 %

Calculated from ideal end-member formula.
Elements listed:
Fe, H, O - search for minerals with similar chemistry

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for EhrenwerthiteHide

References for EhrenwerthiteHide

Reference List:
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