UM1987-18-SiO:AlCaHKNa
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Formula:
(K,Ca,Na)7(Si17Al7)O48 · 14H2O (?)
Possibly a dehydrated K-analogue of laumontite.
Forms complex intergrowths with laumontite, together with other zeolites and calcite, within late-stage lenses and veins (up to 1 cm in width). These bodies occur in xenolithic chalk block and in agglomerates.
Forms complex intergrowths with laumontite, together with other zeolites and calcite, within late-stage lenses and veins (up to 1 cm in width). These bodies occur in xenolithic chalk block and in agglomerates.
Unique Identifiers
Mindat ID:
51553
Long-form identifier:
mindat:1:1:51553:5
Similar Names
| UM1996-38-SiO:AlCaHNa | Na-Ca-Al-Si-O-H | |
| UM1997-//-SiO:AlCaHNa[1] | Na2CaAl4Si4O16 · nH2O | |
| UM1997-//-SiO:AlCaHNa[2] | Na2Ca4Si4O15(OH)4 |
Chemistry of UM1987-18-SiO:AlCaHKNa
Mindat Formula:
(K,Ca,Na)7(Si17Al7)O48 · 14H2O (?)
Element Weights:
Radioactivity
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 UM1987-18-SiO:AlCaHKNa
mindat.org URL:
https://www.mindat.org/min-51553.html
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References for UM1987-18-SiO:AlCaHKNa
Reference List:
Localities for UM1987-18-SiO:AlCaHKNa
ⓘ - 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.
- 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 | |
| Cressey (1987) +1 other reference |
