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Bergbutter

A variety of Halotrichite
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Formula:
FeAl2(SO4)4 · 22H2O
Name:
Named by Abraham Werner. Literally "mountain butter".
A pale yellow crust or tuberose efflorescence found on slate or shale. Noted for a greasy feel when rubbed.


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Unique IdentifiersHide

Mindat ID:
8559 (as Bergbutter)
1809 (as Halotrichite)
Long-form identifier:
mindat:1:1:8559:1 (as Bergbutter)
mindat:1:1:1809:4 (as Halotrichite)

Chemistry of BergbutterHide

Mindat Formula:
FeAl2(SO4)4 · 22H2O
Element Weights:
Element% weight
O68.282 %
S14.405 %
Fe6.272 %
Al6.061 %
H4.981 %

Calculated from ideal end-member formula.
Elements listed:
Al, Fe, H, O, S - 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 BergbutterHide

References for BergbutterHide

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