At-A-Glance
Country of Origin
NJ
United States
Photos
Essential Information
Specimen ID
6474
Mineral Name
Tephroite
Chemical Formula
Mn2SiO4
Subcollection
Franklin and Sterling Hill Suite
Additional Details
Specimen Number
F100
Notes for Researchers
8175a
Physical Description
The mineral labeled “jeffersonite” in this specimen is tephroite.
Geographic Origin
Locality Nickname
Franklin, New Jersey
Locality Lat/Long
41.1220409, -74.5804378
Mining District
Franklin Mining District
Mine Name
Franklin Mine