The open encyclopedia of minerals
Mineralogist.org
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5,946 catalogued minerals · one free database

Every Mineral
on Earth, Explained.

Rigorous science, written for everyone. Look up any mineral by name, or just start browsing — no geology degree required.

5,855IMA Species
3,592Specimen Photos
302Localities Mapped
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Tip: not sure of the name? Browse minerals A–Z or explore by collection instead.
Start with a name

Browse Minerals A to Z

The simplest way in. Pick a letter and see every mineral that starts with it — no jargon, just names you can recognize.

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Popular Minerals

Every entry pairs the hard science — chemistry, structure, formation — with a plain-language explanation of what it is and where it comes from.

5,946
Catalogued Minerals
3,592
Specimen Photos
302
Localities Mapped
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No jargon required

Explore by Collection

Not sure what you’re looking at? Start from a familiar idea — the gems you know, the metals you’ve heard of, the rocks in your backyard.

Everything is linked

One mineral,
the whole story.

Every page connects to the rest of the database, so one lookup leads naturally to the next — from a mineral to its family, its varieties, and where it’s found.

  • See a mineral’s group & varieties at a glance
  • Jump to localities where it’s been found
  • Compare it against similar minerals side by side
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You looked upLive from the database
◆ Quartz SiO₂
Key properties
Mohs 7TrigonalVitreousCleavage: none
Often confused with
What you can do here

Three Ways to Explore

Identify a Specimen

Found something on a hike? Answer a few simple questions — color, hardness, shine — and narrow it down to a shortlist.

Start identifying →

Learn the Science

Clear, cited articles on every species — what it is, how it forms, and why it matters — for curious readers of any level.

Start with the glossary →

Compare & Map

Put any two minerals side by side, or open the map to see where a species has been found around the world.

Compare minerals →
For students, collectors & rockhounds

Browse by Property

Once you know the lingo, filter the whole catalogue the way mineralogists do — by structure, hardness, chemistry, or color.

Community-built

Help build the world’s mineral record.

Mineralogist.org is open and collaborative. Submit specimen photos, locality details and corrections — every contribution is reviewed and credited.

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60Full articles
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Start Exploring the Mineral Kingdom.

Look up a name, browse A–Z, or lose an afternoon down the rabbit hole. It’s all free, and there’s always another mineral to discover.