Presentation on theme: "In the Beginning What are rocks? What are minerals? The rock cycle! Rocks and minerals in our daily lives! Become a “Rock Hound”! Mineral Hardness Scale."— Presentation transcript:
HardnessMineralDescription 1TalcFingernail scratches it easily. 2GypsumFingernail scratches it. 3CalciteCopper penny scratches it. 4FluoriteSteel knife scratches it easily. 5ApatiteSteel knife scratches it. 6FeldsparSteel knife does not scratch it easily, but scratches glass. 7QuartzHardest common mineral. It scratches steel and glass easily. 8TopazHarder than any common mineral. 9CorundumIt scratches Topaz. 10DiamondIt is the hardest of all minerals.
NameType of RockUse BasaltIgneous Used in road building materials CalciteMineralUsed in cements and mortars and the production of lime GraniteIgneousUsed for buildings, monuments, and tombstones MarbleMetamorphicUsed in building, floors, tile in bathrooms ObsidianIgneousUsed in making arrowheads and knives PumiceIgneousUsed in scouring, scrubbing, and polishing materials QuartzMineralUsed in making glass, electrical components, and optical lenses SandstoneSedimentary Used in the building industry for houses SlateMetamorphicUsed for roofs, chalkboards, and patio walks