Creedite

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Physical & Optical Properties

Mohs Hardness 4.5
Specific Gravity 2.7
Refractive Index 1.461 – 1.485
Crystal System Monoclinic
Luster Vitreous
Cleavage Perfect
Fracture Uneven,Conchoidal
Color various
Birefringence 0.021

Mohs Hardness

Mohs Hardness: 4.5
1 Soft10 Hard

Crystal System

β a b c Monoclinic a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Value & Market

Price Tier Budget (< $50/ct)

About Creedite

Creedite is a calcium aluminum sulfate fluoride hydroxide mineral forming stunning, spiky, needle-like crystal clusters that radiate outward like white or pale violet snowflakes from a dark matrix. The finest specimens come from the Navidad Mine in Durango, Mexico, and Creede, Colorado—from which it takes its name. Its striking crystal architecture and translucent lavender color make creedite one of the most visually dramatic display minerals for collectors.

Jewelry Use

Durability 3/10

Science FYI Family

Frequently Asked Questions

What is Creedite?
Creedite is a calcium aluminum sulfate fluoride hydroxide mineral forming stunning, spiky, needle-like crystal clusters that radiate outward like white or pale violet snowflakes from a dark matrix. The finest specimens come from the Navidad Mine in Durango, Mexico, and Creede, Colorado—from which it
What is the hardness of Creedite?
Creedite has a Mohs hardness of 4.5, making it relatively soft for use in jewelry.
What color is Creedite?
Creedite is primarily Various.
How much does Creedite cost?
Creedite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Creedite?
Creedite belongs to the Monoclinic crystal system.

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