lepidolite CAS 1317-64-2

Introduction：Basic information about lepidolite CAS 1317-64-2, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

lepidolite Basic information

• Product Name: lepidolite
• Synonyms: lepidolite;lepidolite ISO 9001：2015 REACH
• CAS: 1317-64-2
• MF: AlFH9KLiO7Si2(-3)
• MW: 269.25
• Mol File: 1317-64-2.mol

lepidolite Usage And Synthesis

Description

Before spodumene became the sole ore for the recovery of lithium for chemical use, lepidolite was used as a lithium source.
One process for recovery of lithium from lepidolite used sulfuric acid in a procedure similar to that used by the Lithium Corporation of America for spodumene. A more recent method involved heating a mixture of lepidolite and potassium sulfate to just below the melting point and extracting the mixture with water to recover a solution of lithium sulfate.

Chemical Properties

Lepidolite is named after the Greek word Lepidos, which means "scale". This is due to the typical formation of the mineral in scale-like clusters. Lepidolite contains between 1.23% to 5.90% lithium oxide and has a monoclinic crystal system with dimensions a=5.3, b=9.2, c=10.2, and β=100°. The crystal symmetry is m or 2/m, with pseudo-hexagonal plates forming fine scale-like clusters. Its attractive light purple color is combined with a glass luster, a hardness of 2-3, and a relative density of 2.8-2.9. There are over 150 minerals containing lithium, but only 30 of these are independent lithium minerals. The most important of these minerals is spodumene, followed by lepidolite.

Agricultural Uses

Lepidolite, a variety of mica, is a fluorosilicate ofpotassium, lithium and aluminum found in pegmatites.Generally, rubidium occurs as an impurity.