includes: Quartz, Topaz, Corundum, and Diamond.
Look up MOHS Hardness Scale. It shows minerals (1-10) softest to hardest. :)
Minerals are what cause water to be hard, tap water in east coast(NJ) is harder than tap water in CA. More minerals=harder water
Those minerals that are harder than the unglazed porcelain streak plate will scratch it rather than leave a streak.
Depending on the minerals in their composition, some rocks are harder than others. Rocks that contain minerals with higher ratings on the Mohs scale are harder, and would erode more slowly than other rocks.
Minerals are naturally occurring substances with a specific chemical composition and crystal structure, while rocks are made up of one or more minerals. Therefore, determining which is harder depends on the specific rock and mineral being compared. In general, minerals tend to be harder than rocks due to their strong crystal structure.
Diamond is a the hardest mineral, so yes. Minerals are what make up rocks.
That would mean coal is harder than Quartz schist. Granite is harder than graphite. No foundation for this assumption.
Minerals are what cause water to be hard, tap water in east coast(NJ) is harder than tap water in CA. More minerals=harder water
thats what she said
Those minerals that are harder than the unglazed porcelain streak plate will scratch it rather than leave a streak.
Based on Moh's Scale of Hardness that identifies minerals, it is. Moh's Scale of HardnessTalcGypsumCalciteFluoriteApatiteOrthoclaseQuartzTopazCorundumDiamondIn this scale, 10 minerals are used as reference. These minerals are arranged from the softest (1) to the hardest (10). thxs
It can be hard to remember the hardness levels of all the minerals and substances of the Earth. Calcite is something that is harder than gold.Ê
Not necessarily. Both harder and softer minerals have valuable uses depending on their properties. Harder minerals like diamonds are useful for cutting and grinding, while softer minerals like talc are used in products like talcum powder. It really depends on the specific application.
Calcite scratching a copper coin is harder because calcite has a higher Mohs hardness scale rating than copper. Steel files can scratch penknife blades because steel is harder than the blade material, which is usually softer.
Fluorite and apatite are two minerals that are harder than calcite but softer than quartz on the Mohs scale of mineral hardness. They have hardness values of 4 (fluorite) and 5 (apatite) respectively, compared to 3 for calcite and 7 for quartz.
Minerals that have a hardness less than that of a knife blade (5.5 on the Mohs scale) can be scratched with a knife. These minerals include gypsum, calcite, and talc.
Depending on the minerals in their composition, some rocks are harder than others. Rocks that contain minerals with higher ratings on the Mohs scale are harder, and would erode more slowly than other rocks.
Absolutely, based on the hardness of the minerals that compose them.