mineral
Microcline Feldspar (Amazonite or White Feldspar)
KAlSi3O8
Hardness of 6 on the Mohs scale, color ranges from white to pale pink or greenish-white, vitreous to pearly luster, triclinic crystal system, distinct cleavage in two directions at nearly right angles, specific gravity around 2.56-2.58.
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Physical properties
Hardness of 6 on the Mohs scale, color ranges from white to pale pink or greenish-white, vitreous to pearly luster, triclinic crystal system, distinct cleavage in two directions at nearly right angles, specific gravity around 2.56-2.58.
Formation & geological history
Forms primarily in felsic igneous rocks such as granites and pegmatites through the slow cooling of magma, as well as in some metamorphic rocks. Widely found in the geological formations of Karelia, Russia, known for its rich pegmatite fields.
Uses & applications
Used in ceramics, glassmaking, as a gemstone or ornamental stone, and highly sought after by mineral collectors.
Geological facts
Microcline is a common rock-forming mineral. The user noted 'карелия' (Karelia), which is a region famous for its extensive Precambrian shield geology, abundant granites, pegmatites, and rich mineral deposits including various feldspars.
Field identification & locations
Identify by its blocky crystal habit, two directions of good cleavage meeting near 90 degrees, and hardness. Common in granitic pegmatites worldwide.
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