Mineral variety Healing crystal

Lake Superior Agate

Orange

Variety of Agate.

Lake Superior Agate specimen
Lake superior agate 002.jpg · Wikimedia Commons (see file page for author & license)

📜 Key facts

AgeAbout 1.1 billion years old (Midcontinent Rift lava flows)
Origin & sourcesLake Superior region of Minnesota, Wisconsin and Michigan. Glaciers spread it through gravels as far south as Iowa. It has been Minnesota's state gemstone since 1969.
CompositionChalcedony banded red, orange and yellow by iron oxides

How it forms

Gas bubbles in lava from the ancient Midcontinent Rift filled slowly with silica, layer by layer. Ice-age glaciers later ground the basalt away and scattered the hard agates across the upper Midwest.

Mineral data: see Agate.

🌍 Where it's found

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

✨ Metaphysical & Folklore

These are traditional and folk beliefs from crystal lore. They are not scientific or medical claims – crystals are not a substitute for professional care.