Hydrohausmannite
A mixture of two or more distinct mineral species
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Colour:
Brownish black, iron black
Lustre:
Sub-Vitreous, Resinous, Earthy
Hardness:
1
Name:
A synthetic hausmannite-like compound was named in 1945 by Walter Feitknecht and W. Marti for its containing hydroxyl. In 1953, naturally-occurring material was named hydrohausmannite by Clifford Frondel. Type material from Franklin, New Jersey, was shown to be a mixture of Hausmannite and Feitknechtite by Bricker (1965).
The original natural "hydrohausmannite" is a pseudomorph of pyrochroite containing feitknechtite and hausmannite. The replacement may be incomplete and relict pyrochroite may be present.
Unique Identifiers
Mindat ID:
9165
Long-form identifier:
mindat:1:1:9165:3
Similar Names
| Hydrohausmannite (of Boldyrev) | A synonym of 'Wad' |
Physical Properties of Hydrohausmannite
Sub-Vitreous, Resinous, Earthy
Transparency:
Opaque
Colour:
Brownish black, iron black
Streak:
Brown
Hardness:
1 on Mohs scale
Comment:
Soft
Tenacity:
Brittle
Parting:
Parting parallel to pyrochroite cleavage planes {0001}
First Recorded Occurrence of Hydrohausmannite
Co-First Recorded Localities:
General Appearance of First Recorded Material:
bundles and fan-like groupings of tiny dark brown needles
Geological Setting of First Recorded Material:
Solution cavities in zinc ore
Associated Minerals at First Recorded Locality:
Synonyms of Hydrohausmannite
Other Language Names for Hydrohausmannite
Simplified Chinese:水黑锰矿
Fluorescence of Hydrohausmannite
Not fluorescent in UV
Other Information
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 Hydrohausmannite
mindat.org URL:
https://www.mindat.org/min-9165.html
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References for Hydrohausmannite
Localities for Hydrohausmannite
Showing 7 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
China | |
| Zhangxiang Peng (1990) |
India | |
| Rao et al. (1979) |
Japan | |
| Watanabe (1959) |
| Fumitoshi HIROWATARI (1961) |
Sweden (FRL) | |
| Frondel (1953) |
USA | |
| Heinrich et al. (2004) |
| Frondel (1953) |
