Triclinic feldspars with twinning striations on the brachypinacoid

Samuel Lewis Penfield; F. L. Sperry

doi:10.2475/ajs.s3-34.203.390

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Penfield, S. L., & Sperry, F. L. (1887). Triclinic feldspars with twinning striations on the brachypinacoid. American Journal of Science, s3-34(203), 390–393. https://doi.org/10.2475/ajs.s3-34.203.390

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Triclinic Feldspars With Twinning Striations on the Brachypinacoid