Quartz replacing Calcite crystals in Agate - image 1

Photo by Larry Maltby

Quartz replacing Calcite crystals in Agate

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Quartz replacing calcite crystals in agate, field of view 1.2 cm vertically, from the Lake Shore Traps, Keweenaw County, Michigan. Larry Maltby photo.

Product details

SpeciesAgate, Calcite, Quartz

SizeMuseum

Dimensions120.0 cm

Added on02/13/2026

LocalityUSA, Michigan, Keweenaw County

Publications

Mineralogical Record Mineral Collections In American Midwest page 134

Comments

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Agate Laguna

Mineral guide

Learn about Agate

vivid fortification banding, glow colors, rarity of classic pockets, highlighting Ojo Laguna locality, value, and care tips.

Agate from Keweenaw County

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