2. Which of these ore minerals show pyroelectricity as well as triboluminiscence and can exhibit a maximum of 6 cleavage directions? a. Fluorite b. Bauxite O c. Sphalerite O d. Hematite
Sphalerite is correct answer because sphalerite shows 6 sets of cleavage. It conduct electricity while heating and it shows triboluminiscene means it glows when it is crushed.