A feldspar mine in a zoned granite pegmatite, located near Hybla.
Ref:
Steacy, H.R., Rose, E. R., Moyd, L. & Hogarth, D.D. (1982): Some classic Mineral Localities of Southeastern Ontario. Mineralogical Record 13: 197-203
Mindat Articles
Exploring the MacDonald Mine, north of Bancroft by Michal Adamowicz
Mineral List
37 entries listed. 22 valid minerals.
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