Rockhounding in New Jersey – What Rocks You Can Find and Where
Explore Rockhounding in New Jersey
Author: Celeste
Rocks!
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Muscovite Mica Streak: White Hardness: 2 – 2.5 Chemical Formula: KAl2(AlSi3O10)(F,OH)2 Muscovite is the most common mineral of the mica family. It is an important rock-forming mineral present in igneous, metamorphic, and sedimentary rocks. Like other micas it readily cleaves into thin transparent sheets. Muscovite sheets have a pearly to vitreous luster on their surface….