| | Book | Saint-Hilaire pluton 36 Geology of the Poudrette quarry Miarolitic cavities in nepheline syenite Sodalite...progressed well through repeated visits to the operating quarry and collaborations with visiting professionals...chiseling away at the quarry walls. Intrigued, they later ventured into the quarry and discovered what...the search continues; their latest visit to the quarry took place in July 2018. Additions were made to... This small unassuming hill with a dusty stone quarry on its north flank, which some enthusiastic collectors |
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