American Mineralogist
REGULAR ARTICLE
229 The granite, pegmatite, and replacement veins in the Sheahan quarry, Graniteville, Missouri
240 Alteration of the lavas surrounding the hot springs in Lassen Volcanic National Park
260 The Rosiwal method and the modal determination of rocks
274 The mineragraphy and x-ray analysis of stainierite from the Swansea mine, Goodsprings, Nevada
281 Crossed axial plane dispersion in two organic compounds. A peculiar extinction phenomenon
292 Crystal classification and symbolism
307 Amphibole from the Purcell sills, British Columbia
310 Optically positive cordierite from New Hampshire
NEW MINERAL NAMES
314 New mineral names
NOTES
253 Note on the Laue symmetry exhibited by orthogonal crystals
311 Note on the occurrence of vivianite in the District of Columbia
BOOK REVIEW
318 Book review
PROCEEDINGS
313 Proceedings of societies
Table of Contents
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Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.