History & Treasure · Grant County mineral guide
What do Grant County's rocks actually tell us?
Follow copper, turquoise, fluorite, silver, manganese, moonstone, ricolite, and river stone through the county's real geology. Each chapter separates documented mineral occurrences from modern permission to collect.
Begin with the land beneath the mine names
Start with the county mineral map in words, then compare Pinos Altos and Hanover, the Burro Mountains, the Gila, and Silver City's nearby districts. The collecting chapter explains the specific differences among BLM land, the Gila National Forest, state trust land, private minerals, active claims, and protected places. The locality chapters follow Rabb Canyon moonstone and Ricolite Gulch serpentine.
The companion Small-Time Prospecting district histories follow mines and communities in greater depth. The Grant County Adventure Guide connects the geology to public town and landscape visits.
8 complete chapters
Read the guide
- Grant County's Mineral Map: Why Copper, Silver, Fluorite, and Turquoise Meet Here
Read the rocks of southwest New Mexico from the Burro Mountains to Pinos Altos, Santa Rita, and the Gila. A source-grounded rockhound's guide to the county's mineral patterns.
- Pinos Altos and Hanover Minerals: Gold Veins, Skarn, Garnet, and Iron
Explore the distinct mineral histories of Pinos Altos and Fierro–Hanover in Grant County, from gold-bearing veins and placers to garnet, magnetite, zinc, and copper skarns.
- Burro Mountains Minerals: Turquoise, Fluorite, Copper, and Pegmatite
The Burro Mountains hold more than Tyrone copper. Follow the evidence for Azure turquoise, Pine Canyon fluorite, Gold Hill pegmatites, and the labels collectors sometimes get wrong.
- Gila River Rocks: Volcanic Cliffs, Fluorite Veins, and Traveling Gravel
Follow Grant County's Gila from Cliff and Gila toward the upper forks, reading volcanic rock, fluorspar history, river gravel, and protected cliff-dwelling geology.
- Silver City Rocks: Chloride Flat Silver, Boston Hill Manganese, and the Names Between
Read Silver City's nearby mineral landscape through silver chlorides, black manganese and iron oxides, historic mine names, and the public Boston Hill trail system.
- Rockhounding Grant County Legally: Claims, Public Lands, and a Useful Field Notebook
A practical Grant County guide to BLM, national forest, state trust, private, and monument land; mine hazards; mineral identification; and preserving specimen provenance.
- Rabb Canyon Moonstone and Smoky Amethyst: A Grant County Gem Locality
The documented Rabb Canyon pegmatites, blue and silver sanidine moonstone, smoky amethyst, specimen identification, and the difference between a historic locality and legal collecting access.
- Ricolite Gulch and Ash Canyon: Grant County's Banded Serpentine
A sourced look at Ricolite Gulch near Redrock, Ash Canyon ornamental stone, its mining history, associated minerals, access questions, and documented fibrous-rock hazards.
From a specimen to a mineral project
A labeled stone can explain a place without turning a hobby trip into a mining operation. Readers who want to prospect for a deposit, locate a federal claim, test it, or work it can follow the separate Small-Time Mining Guide. That series explains current claim and permit rules, including the federal moratorium on new mineral-patent applications.
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