Identification

Hematite Identification Sheet

The most important iron ore, identified by its diagnostic reddish-brown streak regardless of the specimen's outward color.

Identification

Malachite Identification Sheet

A bright green copper carbonate recognized by its color, concentric banding, botryoidal habit, and effervescence in acid.

Identification

Rhodochrosite Identification Sheet

Colorado's rose-pink state mineral: a manganese carbonate identified by color, low hardness, rhombohedral cleavage, and a warm-acid react…

Annual Meeting

Rockbound 2023 Annual Meeting

The 2023 meeting in Tucson leaned into Basin and Range geology, lapidary demonstrations, and the desert show season.

Annual Meeting

Rockbound 2025 Annual Meeting

The 2025 gathering in Denver brought field labs in the Front Range, certification clinics, and a record exhibit hall to the foot of the R…

Identification

Onyx Identification Sheet

A banded chalcedony with a parallel-layered structure, a hardness that outlasts most imposters, and — in this particular library — a name…

Merchandise

ARE 10x Hand Loupe

A quality triplet-corrected loupe for field and gem show use — the single most useful tool a Rockie can carry.

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