Baumite
A mixture of two or more distinct mineral species
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About Baumite
John Leach Baum
Colour:
medium brown, blackish brown, rarely slight dark reddish brown.
Lustre:
Waxy, Greasy
Hardness:
2
Name:
Named in 1975 by Clifford Frondel and Jun Ito in honor of John Leach Baum [March 15, 1916 New York, New York, USA - October 16, 2011 Hamburg, New Jersey, USA], graduate of Harvard University and student under Dr. Charles Palache. He was the former Head Geologist, Franklin Mine, Curator Emeritus of the Franklin Mineral Museum, author and contributor to the mineralogy and geology of the Franklin deposit.
Baumite is a medium brown to nearly black manganoan lizardite which, as with many serpentines. May be intergrown with minor amounts of chlorite. Clark [1993, "Hey's Mineral Index"] reports this as a species, but Nickel and Nichols [1991, "Mineral Reference Manual"] regarded it as 'a mixture of several serpentines and chlorites', quoting Frondel and Ito (1975).
For accuracy, "baumite" is not a variety of lizardite, but rather a mixture of lizardite, zincian caryopilite/zincian greenalite, and chlorite group phases (Guggenheim and Bailey, 1990).
For accuracy, "baumite" is not a variety of lizardite, but rather a mixture of lizardite, zincian caryopilite/zincian greenalite, and chlorite group phases (Guggenheim and Bailey, 1990).
Unique Identifiers
Mindat ID:
573
Long-form identifier:
mindat:1:1:573:7
Similar Names
IMA Classification of Baumite
Discredited
Classification of Baumite
16.7.10
16 : Silicates Containing Aluminum and other Metals
7 : Aluminosilicates of Mg
16 : Silicates Containing Aluminum and other Metals
7 : Aluminosilicates of Mg
Physical Properties of Baumite
Waxy, Greasy
Transparency:
Translucent, Opaque
Colour:
Medium brown, blackish brown, rarely slight dark reddish brown.
Hardness:
2 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Synonyms of Baumite
Other Language Names for Baumite
Common Associates
Associations Based on Photo Data:
Fluorescence of Baumite
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 Baumite
mindat.org URL:
https://www.mindat.org/min-573.html
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References for Baumite
Localities for Baumite
Showing 3 localities.
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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.
Czech Republic | |
| Ř +5 other references |
Norway | |
| Witsø (1994) |
USA | |
| Frondel et al. (1975) |
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA