Heulandite-Ca : (Ca,Na)5(Si27Al9)O72·26H2O
As recorded:
Vulcan Materials Company Crushed Stone Quarry, Manassas, Prince William County, Virginia, USA
Collected by:
Photo added to mindat.org
“The crystal is around 1.3 mm. Collected on May 13, 2010.”
Patrick Haynes (2) - 24th May 2010
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