Sulfate Mineral

Creedite

The Porcupine Crystal

Clear to White
Pale Orange
Lavender-Purple

Quick Facts

FormulaCa₃Al₂SO₄(F,OH)₁₀·2H₂O
SystemMonoclinic
LusterVitreous
StreakWhite
TransparencyTransparent to Translucent
Sp. Gravity2.71
Mohs Hardness
3.5

Formation & Origin

Creedite forms in oxidized zones of fluorite-bearing mineral deposits, where fluorine-rich solutions react with calcium and aluminum minerals. It crystallizes as radiating sprays of acicular (needle-like) crystals that emerge from a central point like a sea urchin or porcupine.

The finest specimens come from Mexico's Navidad Mine in Durango, where vibrant orange creedite clusters grow on beds of dark fluorite. The orange color comes from iron impurities. Chinese specimens tend toward purple or lavender, colored by different trace elements. Colorado material from the type locality near Creede is typically clear to white.

The mineral was first described in 1916 from the Creede mining district in Colorado and named after the town. Despite being known for over a century, creedite remains a relatively obscure mineral appreciated mainly by specimen collectors.

Identification Guide

Creedite is identified by its radiating sprays of needle-like crystals growing from a central point. The porcupine-like or hedgehog crystal habit is distinctive. Colors range from clear to orange to purple. Hardness 3.5 and vitreous luster on crystal faces.

Distinguish from aragonite (similar radiating habit but different crystal system and association), scolecite (fibrous but forms in basalt cavities), and natrolite (similar needle habit, different chemistry). The association with fluorite deposits and the characteristic burst-like crystal clusters help identify creedite.

Spotting Fakes

Creedite is too obscure and fragile to be commonly faked. The main concern is damage. The delicate needle crystals are extremely fragile, and many specimens arrive with broken tips. The finest Mexican orange specimens with intact crystal sprays command significantly higher prices than damaged ones. Handle with extreme care.

Cultural & Metaphysical Traditions

Presented as cultural traditions, not scientific evidence

Creedite is associated with expanded consciousness, ancient wisdom, and connecting with higher spiritual guidance. The radiating crystal pattern is interpreted as energy expanding outward in all directions. Practitioners use it for deepening meditation and accessing Akashic records. Its relative rarity gives it a mystical quality among collectors who seek it out.

Where It's Found

Mexico - Navidad Mine, Durango

World's finest orange crystal clusters

United States - Creede, Colorado

Type locality, original discovery site

China - Guizhou Province

Fine purple specimens

Bolivia - Colquechaca

Some specimens from tin mines

Price Guide

Entry$20-60 small sprays
Mid-Range$80-300 fine orange Mexican specimens
Collector$300-1,500+ museum-quality clusters

Good to Know

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Scratch test: At hardness 3.5, Creedite can be scratched with a copper coin. Handle gently and keep away from harder stones in your collection.

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Sources: Found in 4 notable locations worldwide, from Mexico to Bolivia.

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Heft test: Creedite has average mineral density (2.71). It feels about as heavy as you'd expect from a stone its size.