Whitmoreite
Whitmoreite is a rare phosphate mineral with the chemical formula Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂ · 4H₂O. It belongs to the monoclinic crystal system and is classified in the Strunz system as 8.DC.15 and in the Dana system as 42.11.18.1. The mineral is characterized by its hydrous composition, containing four molecules of water. It typically exhibits a vitreous luster and a range of earthy to dull colors. With a relatively low hardness and moderate density, whitmoreite is part of the phosphate mineral group, which includes minerals formed in oxidizing and hydrous conditions.
Overview
Whitmoreite is a rare phosphate mineral with the chemical formula Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂ · 4H₂O. It belongs to the monoclinic crystal system and is classified in the Strunz system as 8.DC.15 and in the Dana system as 42.11.18.1. The mineral is characterized by its hydrous composition, containing four molecules of water. It typically exhibits a vitreous luster and a range of earthy to dull colors. With a relatively low hardness and moderate density, whitmoreite is part of the phosphate mineral group, which includes minerals formed in oxidizing and hydrous conditions.
Etymology
Whitmoreite is named after Robert Whitmore, in recognition of his contributions to mineralogy. The mineral was officially approved by the IMA, though the exact year of its discovery is not specified in the facts.
How to recognize it
Whitmoreite can be identified by its monoclinic crystal system and hydrous phosphate composition. It typically has a low hardness on the Mohs scale, though the exact value is not provided in the facts. Its color and luster can help distinguish it from other phosphate minerals, though specific diagnostic tests such as streak or density are not detailed. Due to its rarity, whitmoreite is not commonly confused with other species in the field.