American Mineralogist

Volume 27, Issue no. 07 : July 1942

REGULAR ARTICLE

467 The identity of ascharite, camsellite, and β-ascharite with szaibelyite; and some relations of the magnesium borate minerals

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487 Origin of the quartz deposit at Facenda Pacu, Brazil

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500 Crystallographic notes: cristobalite, stephanite, natrolite

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507 An unusual asymmetrically banded fissure vein

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519 Occurrence of pink zoisite (thulite) in the United States

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NOTES

517 Note on the occurrence of calcium sulphate hemihydrate (CaSO4·1/2H2O) in thin sections of rocks

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Table of Contents

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American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.