Tatlock calcite quarry, Lanark

Where: Ontario · North America · approx. 45.13, -76.53 (vicinity only)

Why this spot: Huge white marble pit in Lanark Highlands opened periodically to mineral club digs

What turns up: calcite crystals, phlogopite, diopside, pyrite

Access: Permission required.

Active quarry, access on organized club days only.

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.