natural native sulphur block powdery texture with lustrous celestine crystal bursts

sulphur celestine lustrous crystals abstract array background bladed brimstone burning stone chalcogen chemical element chunk clusters coarsely crystal bursts lattice crystalline solid crystallization crystallographic dipyramids fibrous forms gemstone geology greasy irregular matrix microcrystals mineral combination mineralology minerals natural nonmetal ore orthorhombic pale yellow powdery surface pure raw rough structure sulfates sulfide sulfur texture uneven volcanic