Locality: Walmart front rock banking, Rt. 11, Rochester, NH
Specimen Size: 3.5 cm specimen. Several vertically standing andalusite prisms that are somewhat difficult to make out.
Field Collected: Tom Mortimer (Sept. 2010)
Catalog No.: 1771
Notes: This actually is a color photograph. There is essentially no contrast between the silver-gray mica schist matrix and the embedded andalusite crystals.
Locality: Walmart front rock banking, Rt. 11, Rochester, NH
Specimen Size: 3 cm specimen. A 3 mm thick, backlit, section through a cluster of small andalusite crystals.
Field Collected: Tom Mortimer (Sept. 2010)
Catalog No.: 1770
Notes: The chiastolite variety of andalusite is clearly evident in this thin section.
Locality: Walmart front rock banking, Rt. 11, Rochester, NH
Specimen Size: 3 cm specimen. Same specimen as above, mounted to black paper, normal lighting.
Field Collected: Tom Mortimer (Sept. 2010)
Catalog No.: 1770
Notes:
Locality: Road to Iron Mine, Charlestown, NH
Specimen Size: 3.5 cm specimen.
Field Collected: Tom Mortimer
Catalog No.: 1516
Notes: A Philip Morrill locality. Charles Jackson, 1844, "Geology and Mineralogy of the State of New Hampshire" page 155, states: the Charlestown, NH staurolite "passes by imperceptable degrees into a hydrous species of andalusite, which often invests the crystals with a pearly crust." This is the appearance of my specimen #1516.