Laubmannite
A mixture of two or more distinct mineral species
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About Laubmannite
Colour:
Brown
Lustre:
Vitreous, Silky
Hardness:
3½ - 4
Name:
After Heinrich Laubmann, German mineralogist.
A Mixture Of:
Originally described from Shady, Polk County, Arkansas, by Frondel (1949).
Discredited in 1990 by Dunn because the type material was determined to be a mixture of dufrenite, kidwellite and beraunite.
See, however, Laubmannite (of Moore), which is an unnamed possible species originally described by Moore (1970).
Discredited in 1990 by Dunn because the type material was determined to be a mixture of dufrenite, kidwellite and beraunite.
See, however, Laubmannite (of Moore), which is an unnamed possible species originally described by Moore (1970).
Unique Identifiers
Mindat ID:
2338
Long-form identifier:
mindat:1:1:2338:8
Similar Names
| Laubannite | A synonym of Natrolite | |
| Laubmannite (of Moore) | (Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1. |
IMA Classification of Laubmannite
Discredited
Classification of Laubmannite
19.12.46
19 : Phosphates
12 : Phosphates of Mn
19 : Phosphates
12 : Phosphates of Mn
Physical Properties of Laubmannite
Other Language Names for Laubmannite
German:Laubmannit
Spanish:Laubmannita
Common Associates
Associations Based on Photo Data:
| 2 photos of Laubmannite associated with Kidwellite | NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33 |
| 2 photos of Laubmannite associated with Dufrénite | Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O |
| 2 photos of Laubmannite associated with Goethite | Fe3+O(OH) |
| 2 photos of Laubmannite associated with Hematite | Fe2O3 |
| 2 photos of Laubmannite associated with Rockbridgeite | (Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5 |
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 Laubmannite
mindat.org URL:
https://www.mindat.org/min-2338.html
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References for Laubmannite
Localities for Laubmannite
Showing 7 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.
Germany | |
| Palache et al. (1951) |
| Pawlowski (1991) |
| Weiß (1990) |
USA | |
| Rocks & Minerals: 64: 297. |
| Rocks & Minerals: 64: 297-298. +1 other reference |
| Am Min 51:1811-1814 | |
| Smith (1988) |
Maffei Mine, Nitzlbuch, Auerbach in der Oberpfalz, Amberg-Sulzbach District, Upper Palatinate, Bavaria, Germany