Hardness Test: Quartz Scratches Calcite

Hardness Test: Quartz Scratches Calcite

C001/4239 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 27.6MB

Downloadable file size: 2.0MB

Price image Pricing

Please login to use the price calculator


Caption: Hardness, in mineralogy, is a measure of 'scratchability'; a material of a given hardness will scratch a material that is not as hard. More than a century ago, mineralogist Friedrich Mohs devised a hardness scale for minerals, called the Mohs scale. A mineral of hardness 7, such as quartz, will easily scratch a softer mineral, such as calcite (hardness 3). In this photo, the calcite specimen is a banded 'onyx'. On the Mohs scale, talc is number 1 and diamond is number 10.

Release details: Model release not required. Property release not required.

Keywords: arem collection, calcite, diamond, friedrich mohs, geological, geology, hardness, hardness scale, hardness test, mineral, mineral properties, mineralogy, minerals, mohs, mohs scale, onyx, polished, properties, quartz, scratchability, specimen, talc, tests

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.