Locality: Dame Hill Rd., Orford, NH
Specimen Size: 2 - 3 mm chloritoid "pimples" (porphyroblasts) in 8 cm shist matrix.
Field Collected: Tom Mortimer - 2013
Catalog No.: 1868
Notes: Chloritoid occurrence reported by Doug Rumble of the Carnegie Geophysical Laboratory, Washington, DC.
Chloritoid is typically found in low grade regional metamorphic rocks, rich in aluminum and iron. At higher metamorphic temperatures, staurolite and/or almandine form. Chloritoid is uncommon in New Hampshire, but more common to the to the west in Vermont.
Locality: Rt.12 west side rip-rap, Charlestown, NH
Specimen Size: 14 cm specimen
Field Collected: Tom Mortimer 9/2026
Catalog No.: 2794
Notes: Chloritoid "pimples" (porphyroblasts) in shist matrix. These are similar to the Orford chlorotoid occurrence. Large slabs of this schist are present at the road pull-off spot. I would not have recognized these if not for my experience with the Orford, NH find. Only a species collector would bother with these ! However, chlorotoid is a valid mineral species.