Mineral Cleavage Cleavability Cleanu in Ionic crystals can be cleaved in certain directions clevage in Shearing force Shearing force The displacement is easiest along plane which have the fewest cation anion contact A NaCl crystal is most easily cleaved sonnen perpendicular to a cell edge Cleavage fracture Mineral fracture Cleavage: reflects the tendency of a mineral to This is how a mineral breaks on an uneven surface k bonds). not all minerals have cle s Some break in a conchoidal fracture like glass vag Cleavage may conform to to crystal faces, but does Some break in a fibrous fracture structure. Crystal faces result from growth Others in a splintery fracture Fracture: mineral breakage along irregula urfaces. All minerals can fracture Fracture is a breakage unrelated to the atomic structure of the mineral Important Materials related to Ceramic Engine Mechanical Properties ● Ceramic Engine ● Memory Metal Advantages: gines have long life mileage by 18% to run at more than 18000rpm's n No loss of oil through leakage of burning5 Mineral Cleavage Cleavability Ionic crystals can be cleaved in certain directions Shearing force Shearing force The displacement is easiest along planes which have the fewest cation-anion contacts. A NaCl crystal is most easily cleaved perpendicular to a cell edge Cleavage & Fracture • Cleavage: reflects the tendency of a mineral to break along preferred planes of weakness (weak bonds). Not all minerals have cleavage. • Cleavage may conform to crystal faces, but does not have to. Cleavage is a result of atomic structure. Crystal faces result from growth. • Fracture: mineral breakage along irregular surfaces. All minerals can fracture. Mineral Fracture This is how a mineral breaks on an uneven surface. Some break in a conchoidal fracture like glass & quartz Some break in a fibrous fracture Others in a splintery fracture Fracture is a breakage unrelated to the atomic structure of the mineral Important Materials related to Mechanical Properties Ceramic Engine Memory Metal Ceramic Engine Engines have long life Allow engines to run at higher temperature More powerful Improve gas mileage by 18% Allow engines to run at more than 18000rpm’s Valves require no lubrication No loss of oil through leakage of burning Advantages: