1) 
- This is a picture of potassium feldspar, or orthoclase
- It is a part of the feldspar family
- It's chemical formula is KAlSi3O8
- It's silicate structure is a three-dimensional network
- It's cleavage is at two planes at 90 degrees
2) 
- This is a picture of muscovite
- It is a part of the mica family
- It's chemical formula is Kal2(asSi3O10)(OH)2
- It's silicate structure is sheets
- It's cleavage is one plane
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