One of the most common minerals in the earth’s crust, feldspar has a variety of physical properties that make it a quintessential mineral to study. Feldspar has a well-defined hardness of 6 on the Mohs scale, distinctly shows two planes of cleavage, and is part of Bowen’s reaction series.
Features
- Twelve microcline samples approximately 1″ (3cm) in size
- Microcline is useful for teaching a variety of mineral properties – especially hardness, cleavage, and crystallization temperature
- Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements
- Differing colors among samples offer a visual demonstration of chemical variation
- Specimen comes in clear labeled and barcoded bag for ideal storage
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