Mineral Group · 10 minerals
Sulfate Minerals
Minerals
10
Hardness
2-3.5 Mohs
Crystal Systems
Orthorhombic, Monoclinic
What Defines the Sulfates Group
Built around the sulfate ion (SO₄²⁻). Includes selenite/gypsum (the crystal cave mineral), celestite (sky-blue strontium sulfate), and barite (the heaviest common non-metallic mineral). Many form beautiful crystals from evaporating water, giving them associations with clarity and purification.
Minerals in This Group
Angelite
The Stone of Awareness
Hardness 3.5·Sulfate Group
Anglesite
The Lead Crystal Jewel
Hardness 2.75·Sulfate Mineral
Anhydrite
The Waterless Gypsum
Hardness 3.25·Sulfate Mineral
Barite
The Heavy Spar
Hardness 3.5·Sulfate Mineral
Celestite
The Stone of Angels
Hardness 3.5·Sulfate Group
Creedite
The Porcupine Crystal
Hardness 3.5·Sulfate Mineral
Desert Rose
The Sand Flower
Hardness 2·Sulfate Group (Selenite/Baryte variety)
Gypsum
The Crystal Cave Builder
Hardness 2·Sulfate Mineral
Satin Spar
The Silken Glow
Hardness 2·Sulfate Minerals
Selenite
The Liquid Light
Hardness 2·Sulfate Group