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This bright green "jackstraw" crystal aggregate of Actinolite I picked up along the Kobuk River near the Village of Deering in western Alaska in 1994. It is 4 1/2" x 3" x 2 1/2" (11.7cm x 7.6cm x 6.4cm) (Author: Jim Prentiss)

This bright green "jackstraw" crystal aggregate of Actinolite I picked up along the Kobuk River near the Village of Deering in western Alaska in 1994. It is 4 1/2" x 3" x 2 1/2" (11.7cm x 7.6cm x 6.4cm) (Author: Jim Prentiss)