Limestone

Limestones ; Limestones were deposited in reefs, lagoons, and as fine-grained calcium carbonate sediment on the continents during the many times in Earth hsitory when higher seal levels flooded parts of those continents. Cortona LimestoneFebruary 21, 2017 Glen Rose...

Fieldstones

Fieldstones ; First Peoples Buffalo Jump, Montana Fieldstones are collected from at or near the surface rather than quarried from bedrock. They are usually weathered and sometimes covered in lichens. Corral Creek TumbledOctober 14, 2025 Montana Moss RockFebruary 17,...

Granite and Gneiss

Granite and Gneiss ; Granite bridge, Acadia National Park, Maine Granite and gneiss (pronounced “nice”) are crystalline igneous and metamorphic rocks composed of tightly interlocking crystals. They are generally the most durable of masonry stones. Pipestone...

Chief Cliff

Chief Cliff ; Chief Cliff quarry, northwest Montana The stone name Chief Cliff originated at quarries located on a geologic feature called Chief Cliff in northwestern Montana. Subsequently, the name has been used broadly for a group of geologically related stones...

Montana Moss Rock

Montana Moss Rock ; Central Montana Montana Moss Rock is a sandstone that crops out as weathered fieldstones (loose surface stones) in central Montana. These fieldstones have been collected as masonry stone for decades on many ranch properties in the rolling prairie....