At-A-Glance
Country of Origin
PA
United States
Contributors
Archibald MacMartin
Photos
Essential Information
Specimen ID
1862
Mineral Name
Vermiculite
Chemical Formula
(Mg,Fe++,Al)3(Al,Si)4O10(OH)2•4(H2O)
Subcollection
Archibald M. MacMartin
Additional Details
Specimen Number
004
Physical Description
2 mm thick cleavage section, bleached areas
Geographic Origin
Locality Nickname
Chester Co., Pennsylvania
Locality Lat/Long
40.0010204, -75.8069082