Teepee Canyon Agate Identification Guide
Identify red-and-gold Teepee Canyon agate from the Black Hills by its banding and chalcedony properties, and tell it from Fairburn and jasper.
Read the full Teepee Canyon Agate encyclopedia entry →
What Teepee Canyon Agate Looks Like
Teepee Canyon agate is a banded chalcedony (agate) from the Black Hills region of South Dakota, known for warm fortification banding in reds, oranges, golds, browns, and whites, often found in limestone seams.
- Color: red, orange, gold, brown, yellow, and white bands; sometimes pink or gray.
- Luster: waxy to vitreous on polished or fresh surfaces.
- Transparency: translucent to nearly opaque.
- Form: nodular/seam-fill agate with fortification (concentric, angular) banding.
Step-by-Step Field ID Checklist
- Look for fortification banding. Concentric, angular, repeating bands (like a map contour) are the agate signature.
- Check translucency. Hold thin edges to light—agate glows; jasper does not.
- Waxy luster + conchoidal fracture confirm chalcedony.
- Hardness. Mohs ~7; scratches glass, unscratched by a knife.
- Streak. White.
- Setting. Found weathering from limestone seams in the Black Hills—matrix and locality are useful clues.
Key Diagnostic Tests
- Hardness: 7 (chalcedony).
- Streak: white.
- Fracture: conchoidal, no cleavage.
- Acid: the agate itself does not fizz; adhering limestone matrix will effervesce—useful to confirm the host rock.
- Density: ~2.6.
Common Look-Alikes
- Fairburn agate: the famous Black Hills agate with tighter, more vivid "holly leaf"/fortification banding; Teepee Canyon agate is closely related and from the same region but typically has broader, less crisp banding and is found in-situ in limestone seams rather than as surface float. The two are often confused; tight, sharp, multicolored fortification favors Fairburn.
- Jasper: opaque, no translucency, and lacks fine concentric banding; Teepee Canyon agate is translucent and banded.
- Carnelian: translucent orange-red but unbanded.
- Common chalcedony: translucent but lacks the fortification banding.
Where It Is Found
Teepee Canyon agate occurs in the Black Hills of western South Dakota (and adjacent areas), weathering from Paleozoic limestone seams. It is collected near Teepee Canyon west of Custer, in the same general region that yields Fairburn agate.
Frequently asked questions
How can you tell if it is real Teepee Canyon agate?
Look for translucent chalcedony with concentric fortification banding in reds, golds, and browns, hardness 7, and a waxy luster, ideally found in or near limestone seams in the Black Hills of South Dakota.
What is the difference between Teepee Canyon agate and Fairburn agate?
Both are Black Hills fortification agates. Fairburn typically shows tighter, sharper, more vividly multicolored banding and is found as surface float, while Teepee Canyon agate often has broader banding and is collected in-situ from limestone seams.
What does Teepee Canyon agate look like?
Warm red, orange, gold, and white concentric fortification bands in translucent chalcedony, often as nodules or seam fillings.
How do you tell Teepee Canyon agate from jasper?
Agate is translucent on thin edges and shows fine concentric banding, while jasper is opaque and lacks that delicate banding even when it has color patterns.
Teepee Canyon Agate identified by the community
Recent Teepee Canyon Agate specimens identified with Rock Identifier.
