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

1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond Creedite
Mohs hardness of Creedite shown against the ten reference minerals, from talc (1) to diamond (10).
Mohs Reference mineral Creedite
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Crystal System

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

Value & Market

Price Tier Budget (< $50/ct)

About Creedite

クリーダイトは、硫酸塩・フッ化物を含む珍しい鉱物で、紫色・オレンジ色・無色などの放射状結晶集合体が特徴です。カルシウム、アルミニウム、硫酸塩、フッ化物から構成され、乾燥地帯の酸化帯に産します。メキシコのサカテカス州産の紫色標本が特に美しく、コレクターに人気があります。

Science FYI Family

Frequently Asked Questions

What is Creedite?
クリーダイトは、硫酸塩・フッ化物を含む珍しい鉱物で、紫色・オレンジ色・無色などの放射状結晶集合体が特徴です。カルシウム、アルミニウム、硫酸塩、フッ化物から構成され、乾燥地帯の酸化帯に産します。メキシコのサカテカス州産の紫色標本が特に美しく、コレクターに人気があります。
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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