What is the softest of all minerals?
On the scale of 10 hardest minerals, talc is listed as 1 on the Mohs hardness scale. Only cesium, rubidium with 0.2-0.3 hardness and lithium, sodium and potassium with 0.5-0.6 hardness are softer than Talc. It is a common metamorphic mineral in metamorphic belts of the western United States, western Alps and in the Himalayan region.
Corundum is the naturally occurring aluminum oxide crystal that contains traces of titanium, vanadium, iron, and chromium. Since it is the third hardest mineral on the Mohs scale, it can scratch almost every other mineral. Pure corundum is transparent; however, it can have different colors when impurities are present.
Talc is the softest and diamond is the hardest. Each mineral can scratch only those below it on the scale. Which one of the following minerals is the softest *? Talc (1), the softest mineral on the Mohs scale has a hardness greater than gypsum (2) in the direction that is perpendicular to the cleavage.
While most people have long known that diamonds are the hardest mineral on earth, talc is the softest mineral. According to the Mohs scale, which determines hardness from a range of 1 to 10, talc is a one. It also ranks as an absolute hardness of one.
Corundum is an exceptionally hard and tough material. It is the third-hardest mineral, after diamond and moissanite. It serves as the index mineral for a hardness of nine on the Mohs Hardness Scale.
Talc – Gypsum – Calcite – Fluorite – Apatite – Feldspar – Quartz – Topaz – Corundum – Diamond – “Mohs Scale of Mineral Hardness ” should be familiar to rock-hounds and earth-science students alike, as it lists common minerals in the order of relative hardness (talc as the softest and diamond as the hardest mineral …
Talc is the softest mineral on Earth. Talc is a silicate (like many of the Earth’s most common minerals), and in addition to silicon and oxygen, contains magnesium and water arranged into sheets in its crystal structure.
Talc (1), the softest mineral on the Mohs scale has a hardness greater than gypsum (2) in the direction that is perpendicular to the cleavage.