potassium feldspar has the following properties: pure substance not made by living things found in nature…

potassium feldspar has the following properties: pure substance not made by living things found in nature solid. glassy luster fixed crystal structure is potassium feldspar a mineral or a rock? mineral rock

potassium feldspar has the following properties: pure substance not made by living things found in nature solid. glassy luster fixed crystal structure is potassium feldspar a mineral or a rock? mineral rock

Answer

Answer:

mineral

Brief Explanation:

Minerals are pure substances, not made by living things, found in nature, solid with a fixed crystal - structure and often have a glassy luster. Potassium feldspar meets these criteria.