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Microcline (KAlSi3O8) NS2504 |
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![Image: NS2504.jpg](../minerals_jpg/NS2504.jpg) |
Crystal system |
monoclinic. |
Habit |
prismatic crystals frequently twinned which produces a cross-check or "tartan" look on the mineral face. |
Cleavage |
good to perfect. |
Fracture |
uneven. |
Hardness |
6 |
Specific Gravity |
2.54-2.57 |
Color |
white to pale yellow, and in rare circumstances red or green. |
Luster |
vitreous, transparent to translucent. |
Streak |
white. |
Distinguishing features |
the cross-checked or "tartan" appearance is characteristic of microcline. |
Uses |
green variety is polished and formed into beads for use as jewelry.
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