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Unnamed (NH4-Al Sulphate-Tetrahydrate)

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Formula:
(NH4)Al[SO4]2 · 4H2O
Hygroscopic, unstable; forms in a very narrow temperature range around 105°C.


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Unique IdentifiersHide

Mindat ID:
40018
Long-form identifier:
mindat:1:1:40018:1

Chemistry of Unnamed (NH4-Al Sulphate-Tetrahydrate)Hide

Mindat Formula:
(NH4)Al[SO4]2 · 4H2O
Element Weights:
Element% weight
O62.092 %
S20.740 %
Al8.726 %
N4.530 %
H3.912 %

Calculated from ideal end-member formula.
Elements listed:
Al, H, N, O, S - search for minerals with similar chemistry

Other InformationHide

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 Unnamed (NH4-Al Sulphate-Tetrahydrate)Hide

References for Unnamed (NH4-Al Sulphate-Tetrahydrate)Hide

Localities for Unnamed (NH4-Al Sulphate-Tetrahydrate)Hide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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). 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.
Czech Republic
 
  • Central Bohemian Region
Žáček et al. (1995)
Germany
 
  • North Rhine-Westphalia
    • Cologne
      • Aachen
        • Alsdorf
Witzke et al. (2015)
Russia
 
  • Chelyabinsk Oblast
Cesnokov et al. (1998)
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