last edited: 3/2/11 number of photos: 8
Perlite is a light-colored volcanic glass that has an abundance
of curved fractures. Included within some perlites are dark,
solid nodules of obsidian, commonly referred to as Apache tears.
perlite and Apache tear: 1 2 3* 4
perlite from California: 1 2 3 4
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Just credit photos to R.Weller/Cochise College.