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Pigotite
A valid IMA mineral species - grandfathered - questionable
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About Pigotite
Formula:
Al4C6H5O10 · 13H2O (?)
Colour:
brown
Lustre:
Resinous
Name:
Named for Reverand M. Pigot who helped collect the first material.
An aluminium-bearing organic compound, said to be formed by the action of wet vegetation on granite.
Unique Identifiers
Mindat ID:
3211
Long-form identifier:
mindat:1:1:3211:3
Similar Names
IMA Classification of Pigotite
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
Al4C6H5O10·13H2O (?)
Approval year:
1894
Classification of Pigotite
10.AC.15
10 : ORGANIC COMPOUNDS
A : Salts of organic acids
C : Benzine Salts
10 : ORGANIC COMPOUNDS
A : Salts of organic acids
C : Benzine Salts
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Pig | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Pigotite
Chemistry of Pigotite
Mindat Formula:
Al4C6H5O10 · 13H2O (?)
Elements listed:
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 52 : Guano- and urine-derived minerals | <0.4 |
| 53 : Other minerals with taphonomic origins | <0.4 |
Other Language Names for Pigotite
Related Minerals - Strunz-mindat Grouping
| 10.AC.05 | Mellite | Al2[C6(COO)6] · 16H2O |
| 10.AC.10 | Earlandite | Ca3[CH2(COO)-CHOH(COO)-CH2(COO)]2 · 4H2O |
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 Pigotite
mindat.org URL:
https://www.mindat.org/min-3211.html
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References for Pigotite
Reference List:
Localities for Pigotite
Showing 5 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.
UK | |
| - (2023) +1 other reference |
| Golley et al. (1995) |
| - (2023) +1 other reference |
| Golley et al. (1995) |
Venezuela | |
| Franco Urbani (2009) |
Porth Chapel, St Levan, Cornwall, England, UK