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Groatite, NaCaMn (super 2+) 2 (PO 4 )[PO 3 (OH)] 2, a new mineral species of the alluaudite group from the Tanco Pegmatite,
Bernic Lake, Manitoba, Canada; description and crystal structure; Cooper, M A; Hawthorne, F C; Ball, N A; Ramik, R A; Roberts, A
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https://doi.org/10.3749/canmin.47.5.1225 (ESS Cont.# 20110151)