Ex. Keith Hayes collection
Origin: Poudrette Quarry, Mt. St. Hilaire, Quebec, Canada
Sample size: 2.6 x 2.9 cm (top/2nd row), 2.8 x 2.7 cm (3rd/4th row), 2.9 x 1.3
cm (5th row), 1.8 x 1.3 x 1.1 cm (6th/7th row), 0.5 x 0.5 x 0.4 cm (8th/bottom
row)
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