Mineralogy classified into density (often given as specific gravity); measures of mechanical cohesion (hardness, tenacity, cleavage, fracture, parting); macroscopic visual properties (luster, color, streak, luminescence, diaphaneity); magnetic and electric properties; radioactivity and solubility in hydrogen chloride (). "Hardness" is determined by comparison with other minerals. In the Mohs scale, a standard set of minerals are numbered in order of increasing hardness from 1 (talc) to 10 (diamond). A harder mineral will scratch a softer, so an unknown mineral can be placed in this scale by which minerals it scratches and which scratch it. A few minerals such as calcite and kyanite
Softer, Softest it did not receive a lot of airplay. Recorded by John Harris and directed by Milton Lage, the performance also featured guest musicians Ralph Carney on cello, Zeena Parkins on harp and Erik Friedlander on clarinet. Hole Guest musician Technical Softer, Softest "Softer, Softest" is a song by American alternative rock band Hole, written by frontwoman Courtney Love and lead guitarist Eric Erlandson. The song was released as the band's eighth single and fourth and final single from their second studio album, "Live Through This", in December 1995. The single was released just as the band finished their extensive touring