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ID: SIL7-244-16
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ID: SIL7-244-17
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Amazon Stone. Pikes Peak, Colorado. Specimen No. 81813, U.S. N.M.
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ID: SIL28-217-01
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Crystals of Quartz. Dauphiny, France. Specimen No. 82218, U.S.N.M
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ID: SIL28-217-02
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Topaz with Smoky Quartz. Specimen No. 81242, U.S.N.M.
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ID: SIL28-217-03
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Cinnabar Tungyen Prefecture, Kweichow, China
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ID: SIL28-216-01
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A celebrated collection of gem minerals
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ID: SIL28-216-02
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Variscite, Turquoise, Chrysoprase, and Jade
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ID: SIL28-214-02
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Fig. 33. View of rockshelter phase of Danger Cave excavation by E.R. Smith in 1941.
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ID: SIL7-61-01
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Fig. 133. Purron Cave as seen fromteh opposite side of the canyon.
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ID: SIL7-63-01
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Fig. 134. Coxcatlan Cave during the dry season. The deciduous nature of the vegetation is clearly seen. The man tanding on the talus demonstrates the scale of the shelter which extends across the face.
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ID: SIL7-63-02
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Rockshelter lies at base of cliff, above stream.
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ID: SIL7-62-01
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