Haüyne, a Feldspathoid Named after René Just Haüy
Haüyne [cubic, Na3Ca(Si3Al3)O12(SO4)], a member of the feldspathoid supergroup, is named after René Just Haüy, who is considered to be the father of mineralogy and crystallography. An old synonym ‘hauynite’ remains as a gemstone name. It occurs in alkali-rich volcanic rocks and in a few metamorphic rocks. It is a constituent mineral of lapis lazuli, as well as sodalite and lazurite, which are related minerals in the sodalite group. It usually occurs as aggregates of fine grained crystals and rarely as a transparent single crystal. It is known as a blue mineral, but can also be colorless, gray, yellow, green, and pink. Its earliest descriptions are from Vesuvius, Italy, which is a major locality of the mineral. The photograph by Koichi Momma (FOV:19 mm) shows a blue crystal of haüyne on a specimen in the mineral collection of the National Museum of Nature and Science, NSM-MF14763.
(Explanation: Ritsuro MIYAWAKI)
Overview of the Special Issue “2022 Year of Mineralogy”
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 125.
DOI:10.5026/jgeography.131.125
Introduction to the Special Issue “2022 Year of Mineralogy”
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 129.
DOI:10.5026/jgeography.131.129
The Dawn of Mineralogy (Review Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 133.
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New Minerals and Minerals First Found in Japan (Review Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 147.
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Chemical Composition of the Earth (Review Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 163.
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The Earth’s Interior: From the Perspective of Mineral Science (Review Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 179.
DOI:10.5026/jgeography.131.179
Using Mineral Science to Elucidate Mysteries of the Early Solar System
(Original Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 193.
DOI:10.5026/jgeography.131.193
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 213.
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Journal of Geography (Chigaku Zasshi), 2022, 131(2), 235.
DOI:10.5026/jgeography.131.235
Progress and Future of Resource Geology as Mineral Sciences (Review Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 257.
DOI:10.5026/jgeography.131.257
Minerals and Gems (Review Article)
Journal of Geography (Chigaku Zasshi), 2022, 131(2), 275.
DOI:10.5026/jgeography.131.275