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Heulandite Subgroup, Prehnite
Specimen ID:
GKV-DFM
Mineral(s)
Heulandite Subgroup
:
(Na/Ca/K)
5-6
[Al
8-9
Si
27-28
O
72
]· nH
2
O
Prehnite
:
Ca
2
Al
2
Si
3
O
10
(OH)
2
Locality
Mindat locality:
Dracut, Middlesex County, Massachusetts, USA
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Photos
Events
Photo added to mindat.org
“
Heulandites sprinkled on knobs of yellowish prehnite, which grew over quartz crystal cores. Specimen about 3" across.
”
Paul Gilmore
- 17th March 2006
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