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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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∙ 14y ago
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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 is the purpose of a scratch test?
The scratch test is used for identifying minerals.You simply get a hard, white surface, and scratch the mineral on it.
Is sphalerite a sedimentary rock?
Sphalerite is a mineral and is not classified as a rock is.
What kind of rocks can diamonds scratch?
Every other rock or mineral. You see, on the Moh's Scale (The hardness of rocks,) diamond ranks at a 10 which is the highest level. For more information, visit the related link.
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.
Can a diamond scratch a rock or mineral?
Diamond will scratch all rocks and other minerals, including itself.
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 rocks can scratch a diamonds?
Diamonds can only be scratched by other diamonds. Diamond is the hardest natural mineral.
Which mineral ranked the highest hardness?
A diamond is the hardest mineral. A diamond can scratch all other minerals or rocks and cannot be scratched by another mineral or rock except another diamond.
Can barite scratch other rocks or minerals?
Yes. Barite is able to scratch any other mineral, or rock composed of minerals, with an equivalent or lower Mohs hardness rating (Barite: Mohs 3-3.5).
What is the purpose of a scratch test?
The scratch test is used for identifying minerals.You simply get a hard, white surface, and scratch the mineral on it.
Is sphalerite a sedimentary rock?
Sphalerite is a mineral and is not classified as a rock is.
What kind of rocks can diamonds scratch?
Every other rock or mineral. You see, on the Moh's Scale (The hardness of rocks,) diamond ranks at a 10 which is the highest level. For more information, visit the related link.
What does it mean when two rocks cannot scratch each other?
If two rocks cannot scratch each other, then they would have to be of equal hardness. A harder rock can always scratch a softer rock.
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.
Can quartz scratch other rocks and minerals?
yes.
Can moonstone scratch other rocks and minerals?
yes it can
