Creedite Crystals Durango Mexico

Creedite is a calcium aluminum sulfate fluoro hydroxide mineral. Ca₃Al₂SO₄(F,OH) ₁₀ Often occuring as acicular radiating sprays. Creedite may be colorless, white, yellowish, orange, blue, blue-violet. The orangish is often rust stained like the specimens we have from the Navidad Mine Rodeo Durango, Mexico.