Holmquistite

This specimen features dark green to nearly black holmquistite on matrix. Holmquistite is a rare amphibole species first discovered in Sweden, typically found in fibrous, chatoyant formations within mica schist. This example comes from the historic Foote Mine, a once-extensive open-pit operation known for producing numerous rare minerals. While many type species were identified from the mine’s east dump due to its accessibility and high concentration of oxidized material, the entire site has been closed to collecting for many years, with most of the dumps and workings reclaimed. The mine, originally opened around 1938 and later operated by the Foote Mineral Co., is now strictly off-limits, with posted signs and enforcement against trespassers.

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This specimen comes from the collection of Dr. Peter Tarassoff, a prominent figure in mineralogy, particularly known for his work at Mont Saint-Hilaire (MSH). His diligent collecting and examination efforts have led him to be the first to identify at least 35 species and discover 12 new species, not only at MSH but also at other alkaline localities. Dubbed the "Dean" of Mont Saint-Hilaire collectors, Peter was honoured with the naming of the new species petarasite in 1980. He has authored or co-authored numerous mineralogical articles and has been a member of the Mineralogical Association of Canada since 1964. Additionally, Peter has volunteered at the Redpath Museum for the past 21 years, where he was formally appointed the Honorary Curator of Mineralogy. In recognition of his significant contributions to mineralogy, Peter was awarded the 2017 Pinch Medal.