Description
Black sand consists of heavy, dark-colored mineral fragments, primarily volcanic basalt or magnetite, found on beaches and in placer deposits. Key features include its dark, glossy appearance, high density, and often magnetic properties. Specifications vary by origin but include minerals like magnetite, hematite, and various rare earth elements (REEs) and metals like thorium, titanium, and zirconium. Black sand is used in placer mining for these valuable minerals, construction, and landscaping.
Features
Color:
Deep black to dark brown, sometimes with a glossy or shiny sheen.
Composition:
Primarily composed of durable, heavy minerals, such as:Volcanic fragments: Tiny pieces of volcanic rock, like basalt, from volcanoes.
Magnetic minerals: Rich in magnetite, which can be attracted by a magnet.
Other heavy minerals: Includes hematite and other denser minerals.
Density: Characteristically has a high density, which is more than twice that of conventional sand or gravel.
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