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The scratch resistance of rock forming minerals is measured using Mohs hardness scale. This is a relative hardness scale ranging from 1 - 10 (with 1 being the softest e.g. Talc and 10 being the hardest - Diamond).A
Galena has a Mohs scale hardness of 2.5 - 2.75.B This is low by the standards of common rock forming minerals. As such it is unlikely that Galena will be capable of scratching the majority of other rocks or rock forming minerals.
Source of data - see external links:
A Mohs hardness scale - Wikipedia
B Galena - Wikipedia
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Which mineral scratches other rocks?
Diamond is the hardest mineral and is able to scratch other rocks.
Is galena a silicate?
Galena is a mineral, not a rock, but is commonly found emplaced in sedimentary rock from hydrothermal deposition in faults and fissures.
What kind of rocks can diamonds scratch?
Diamonds can scratch all types of rocks, as they are the hardest natural substance on Earth. This means that diamonds can scratch minerals like quartz, calcite, and feldspar, as well as softer rocks like limestone and shale.
What type of rock form is galena in?
First: Roast the Galena in a blast furnace for 30 minutes. Second: Add Carbon to the blast furnace to remove impurities. Third: Tag off your lead from the bottom of the blast furnace.
Does graphite scratch glass?
Yes, scientist have turned "mundane" form of carbon into diamond by applying enormous amounts of heat and pressure. These conditions are similar to what forms diamonds naturally. The process is expensive though.
