At-A-Glance
Country of Origin
PA
United States
Photos
Essential Information
Specimen ID
1855
Mineral Name
Vermiculite
Mineral Variety
Jeffersite
Chemical Formula
(Mg,Fe++,Al)3(Al,Si)4O10(OH)2•4(H2O)
Subcollection
Beck Economic Geology
Additional Details
Specimen Number
010
Notes for Researchers
ID 1909, sticker 255
Physical Description
Jeffersite - Bronze foliated crystal with distinct basal and pyramidal cleavage
Geographic Origin
Locality Nickname
West Chester, Pennsylvania
Locality Lat/Long
39.9606643, -75.6054882