I don't have my science book with me and I'm not so good at internet research. The other option of what feldspar could be would be a rock instead of a mineral...so please help me.
2007-11-04 04:10:10 · 4 answers · asked by Ritsuku (Shadow) 2 in Science & Mathematics ➔ Earth Sciences & Geology
By a loose interpretation, feldspar is a mineral.
But to a mineralogist, feldspar is a term for a group of aluminum silicate minerals. To be a true mineral, it needs to have a definite chemical composition, which the feldspar group does not have. Common solid-solution series end members are orthoclase (K), albite (Na), and anorthite (Ca), but there are also Ba, Rb, Sr, and Fe varieties. Each of these end members are definite minerals because they have a definite chemical composition, but technically feldspar is not as the composition is variable.
Feldspar is definitely not a rock.
2007-11-04 04:32:17 · answer #1 · answered by minefinder 7 · 4⤊ 0⤋
Here is the definition of mineral from the internet
A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalline structure, color, and hardness.
So I think that Feldspar is both a mineral and a rock. Because it would be homogenous.
2007-11-04 04:14:53 · answer #2 · answered by rscanner 6 · 0⤊ 1⤋
Feldspar is a mineral. It can be composed of potassium which gives granite it's pink color.
2007-11-04 04:16:13 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Short and sweet: All feldspars, regardless of their elemental composition, are minerals.
2007-11-04 04:59:43 · answer #4 · answered by Lady Geologist 7 · 2⤊ 1⤋