Yes. It is much harder than your fingernail.
The mineral that can scratch feldspar and can be scratched by garnet is quartz. Quartz has a hardness of 7 on the Mohs scale, making it capable of scratching feldspar, which has a hardness of 6. Meanwhile, garnet has a hardness of around 6.5 to 7.5, allowing it to scratch quartz but not all varieties of garnet will scratch quartz.
Yes, graphite can be scratched by a nail. Graphite has a relatively low hardness on the Mohs scale, rating around 1 to 2, which makes it softer than many materials, including the steel used in nails. This means that a nail can easily leave scratches on the surface of graphite.
If you rub a piece of fluorite against a piece of feldspar, you would likely observe that the fluorite leaves a streak on the feldspar due to its lower hardness on the Mohs scale. Fluorite has a hardness of 4, while feldspar ranges from 6 to 6.5, meaning feldspar is harder and would not be scratched by fluorite. The interaction may produce some fine dust from the fluorite, but it would not result in significant abrasion of the feldspar.
A mineral can be tested for hardness using a fingernail, penny, or nail, which are common items that serve as reference points on the Mohs scale of mineral hardness. For instance, a fingernail has a hardness of about 2.5, while a copper penny is around 3.5. If a mineral can be scratched by a fingernail, it is softer than 2.5; if it can be scratched by a penny but not a fingernail, it falls between 2.5 and 3.5. This simple test helps in identifying the mineral's hardness and assists in classification.
Feldspar can be found in many things, including soap
potassium feldspar
Quartz
Yes.
Calcite is a mineral that can be easily scratched by a steel nail due to its relatively low hardness compared to steel.
No, sulfur is harder than a nail so it cannot be scratched by a nail. Nails are typically made of iron, which is softer than sulfur. Therefore, if a nail comes into contact with sulfur, the nail is more likely to scratch than the sulfur.
Fluorite is harder than feldspar, so scratching fluorite against feldspar would cause the fluorite to scratch the feldspar. This means the fluorite would leave a mark on the feldspar, showing that fluorite is harder than feldspar.
A steel nail can scratch feldspar but not quartz. Feldspar has a hardness of 6 on the Mohs scale, while quartz has a hardness of 7.
No on the mohs scale the fingermail is lower than feldspar. Source:Knowledge.
Halite has a hardness of 2.5 on the Mohs scale, while a fingernail has a hardness of about 2.5 as well. Therefore, halite can be scratched by a nail.
The mineral that can scratch feldspar and can be scratched by garnet is quartz. Quartz has a hardness of 7 on the Mohs scale, making it capable of scratching feldspar, which has a hardness of 6. Meanwhile, garnet has a hardness of around 6.5 to 7.5, allowing it to scratch quartz but not all varieties of garnet will scratch quartz.
It can be scratched by a diamond, corundum, topaz, and quartz.
apatite with a steel knife feldspar with window glass