Physical features
1. Color- Dull gray.
2. Streak- Satin to iridescent.
3. Luster- Colorless.
4. Cleavage- Perfect basal.
5. Transparency- Translucent to transparent.
6. Fracture- Conchoidal
7. Hardness- 6.3
8. Forms- Granular with large crystals.
Feldspar's make up for more than 50 percent of the earths crusts, they are even more common
than quartz. This particular feldspar is Labradorite. Amazingly beautiful, this mineral is dark blue and dull. When viewed in certain angles, the shimmering surface shows iridescent colors, such as blue, green and even dark violets. Most mineral occurrences are basic to intermediate found in igneous rocks with low silica. This piece of labradorite was found in the U.S.A (New York) Scandinavia and Canada have been known for there feldspar's as well. Other minerals that can be associated with Labradorite are biotite, pyrovene and hornbled.
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