scapolite group
noun
: a group of minerals crystallizing in the dipyramidal class of the tetragonal system, being white or grayish white in color when pure, and consisting essentially of silicates of aluminum, calcium, and sodium (hardness 5–6.5, specific gravity 2.5–2.8)
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“Scapolite group.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/scapolite%20group. Accessed 26 Nov. 2024.
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