Mount Antero
Mount Antero, in Colorado, is one of North America's highest gem localities, famed for aquamarine and rare phenakite.
About Mount Anteroextended article
What it is known for
Miarolitic cavities in the Mount Antero granite yield blue aquamarine, phenakite, fluorite, and smoky quartz at high altitude.
What collectors look for
Gem aquamarine and the rarer phenakite, well-terminated on matrix, are the most sought-after.
Frequently asked questions
Where is Mount Antero?
Mount Antero is a mineral locality in Colorado, USA.
What minerals are found at Mount Antero?
Minerals from Mount Antero include Aquamarine, Phenakite.
What is Mount Antero known for?
Mount Antero, in Colorado, is one of North America's highest gem localities, famed for aquamarine and rare phenakite.
References & databases
Mindat.org is the world’s largest open mineralogy database.