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
GUID
(UUID V4):
(UUID V4):
ca5a6986-23cc-4e18-bc15-eef83d4b8a57
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:æ°Žé»é°çż
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
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
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 | |
| ... |
| Frondel (1953) |