Is Obsidian Harder Than Granite

It is confined to areas of geologically recent volcanic activity.

Is obsidian harder than granite.

Obsidian igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Beyond that their similarities end. Characteristics of rocks include texture appearance color fracture streak hardness etc. Obsidian and granite are igneous rocks so called because they were formed from the molten magma of volcanoes.

Created in 1812 by german geologist and mineralogist friedrich mohs it is one of several definitions of hardness in materials science some of which are more quantitative. Granite the most common rock on the continental crust is composed of visible crystals. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It can scratch talc but not calcite which is even harder.

Properties of rock is another aspect for obsidian vs andesite. Appearance of obsidian is shiny and that of andesite is dull and soft. Lonsdaleite is sometimes formed when meteorites containing graphite. Obsidian is not a genuine mineral or rock it is a natural glass that contains microscopic mineral crystals.

According to the scale talc is the softest. It can be scratched by all other materials. Rocks are made up of one or more minerals. Mohs scale of mineral hardness is named after friedrich mohs a mineralogist mohs scale is ordered by hardness determined by which minerals can scratch other minerals.

Obsidian is found in many locations worldwide. Obsidian is extremely rich in silica about 65 to 80 percent is low in water and has a chemical composition similar to rhyolite. Obsidian older than a few million years is rare because the glassy rock is rapidly destroyed or altered by weathering heat or other processes. Despite the fact that they ve been surpassed by.

Obsidian has a glassy lustre and is slightly harder than window glass. Diamonds of course are harder than all of these and still clock in at 7 on the all time list of hardest materials found or created on earth. Though some rocks look identical they have certain characteristics which distinguish them from others. Granite vs obsidian characteristics.

The mohs scale of mineral hardness m oʊ z is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. If the results are confirmed with physical experiments both materials would be far harder than any substance ever measured.