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RM3681   Howlite
Ca₂B₅SiO₉(OH)₅
  -  6. Borates
#2962
Black's quarry, Windsor, Hants Co., Nova Scotia, Canada

Howlite specimens from the type locality are not very common on the market. This one belongs from the F. Coune collection (Belgium) and was acquired around the 1970s. It is a calcium borosilicate with botryoidal forms, polished on one side in this specimen to reveal the structures. The back shows a natural fracture.

Size: 5.5 x 5.2 x 2.3 cm.
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