muscovite

"The rubber handle on the electrical wire acts as an insulator, protecting you from electric shock. "

"The browns and greens in this painting give it a nice woodsy feel."

"A CPU is a component of a computer."

"My brother is a talented electrical. "

"The group of students worked together on their project. "

"The formula for calculating the area of a rectangle is length times width. "

"The fertilizer contained potassium to help the plants grow stronger. "

"The geologist found a beautiful mineral specimen in the rock collection. "

"Use the sheets in the hall closet to make the bed."

"The scientist studied the chemical composition of the soil sample. "

"The geologist explained that granite is a common rock containing several minerals, including aluminosilicate materials like feldspar. "

"The thick walls of the recording studio insulated the sound from the outside world. "