Haydenite
A variety of Chabazite-Ca
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About Haydenite
Horace Henry Hayden
Formula:
(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Name:
Named in 1822 by Parker Cleaveland in honor of Dr. Horace Henry Hayden [October 13, 1769 Hayden Station, Windsor, Connecticut, USA - January 26, 1844 Baltimore, Maryland, USA], dentist and lecturer on dentistry at the University of Maryland, and he was co-founder of the Maryland Academy of Science. Hayden also founded the American Society of Dental Surgeons. Hayden published several works of geology, collected minerals, and discovered the mineral named for him.
First Recorded Locality:
Haydenite is a usually gemmy, pale yellow-orange to golden-brown variety of chabazite with scalenohedral modifications and showing contact twinning.
Unique Identifiers
Mindat ID:
10182 (as Haydenite)
6854 (as Chabazite-Ca)
6854 (as Chabazite-Ca)
Long-form identifier:
mindat:1:1:10182:8 (as Haydenite)
mindat:1:1:6854:9 (as Chabazite-Ca)
mindat:1:1:6854:9 (as Chabazite-Ca)
Similar Names
| Haydeeite | A valid IMA mineral species | Cu3Mg(OH)6Cl2 |
| Haydenit | A synonym of Chabazite | |
| Headdenite | A synonym of Arrojadite-(KFe) | |
| Hiddenite | A variety of Spodumene | LiAlSi2O6 |
Chemistry of Haydenite
Mindat Formula:
(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O
Element Weights:
First Recorded Occurrence of Haydenite
Common Associates
Associations Based on Photo Data:
| 4 photos of Haydenite associated with 'Beaumontite (of Lévy)' | (Ca,Na)5(Si27Al9)O72 · 26H2O |
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 Haydenite
mindat.org URL:
https://www.mindat.org/min-10182.html
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References for Haydenite
Reference List:
Localities for Haydenite
Showing 1 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.
USA (FRL) | |
| Paker Cleaveland (1822) |
Jones Falls Quarries, Baltimore City, Maryland, USA