Formula: NaCa5Zr4Si16O40(OH)11 . 8H2O
Origin of name: From locality; Loudoun County, Virginia
Crystal system: Unknown
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Colourless to green
Diaphaneity:
Luster:
Habit: Crystals fibrous, radiating, in spherules
Hardness: 5
Specific gravity: 2.48
Cleavage: None
Tenacity:
Streak: Colourless
Synonyms/varieties:
Comments:
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