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What mineral is softer than apatite?
The mineral that is softer than apatite is fluorite. On the Mohs scale of mineral hardness, apatite has a hardness of 5, while fluorite has a hardness of 4. This means that fluorite can be scratched by minerals with a hardness greater than 4, including apatite.
An unknown mineral scratches apatite and is scratched by corundum. What can you conclude about this mineral and hardness?
The unknown mineral has a hardness greater than that of apatite (which has a hardness of 5 on the Mohs scale) since it can scratch it. However, it has a hardness less than corundum (which has a hardness of 9) since it can be scratched by it. Therefore, we can conclude that the hardness of the unknown mineral is between 5 and 9 on the Mohs scale.
Can apatite scratch topaz?
No, apatite cannot scratch topaz. On the Mohs scale of mineral hardness, apatite has a hardness of 5, while topaz has a hardness of 8. This means that topaz is significantly harder than apatite and can easily scratch it.
What is the density of mineral apatite?
Its density is: 3.19
Is a olivine a silicate mineral?
Extremely iron-rich olivine is rare, but is present in some nepheline syenite. Other minerals common in minor amounts include sodium-rich pyroxene, biotite, titanite, zircon, iron oxides, apatite, fluorite, melanite garnet, and zircon. Cancrinite occurs in several nepheline-syenites.
Which minerals on Mohs' hardness scale can be scratched by quartz?
Othoclase, apatite, fluorite, calcite, gypsum, and talc.
What mineral scratches fluorite but not feldspar?
Quartz scratches fluorite but not feldspar. Fluorite has a relative hardness of 4 on the Mohs scale, while feldspar has a hardness of 6-6.5. Quartz, with a hardness of 7, is harder than fluorite but softer than feldspar, allowing it to scratch fluorite but not feldspar.
Can fluorite scratch apatite?
Yes, fluorite can scratch apatite. Fluorite is harder than apatite on the Mohs scale, which means it has the ability to scratch apatite.
What mineral can be scratched with a steel knife or window glass?
apatite with a steel knife feldspar with window glass
If a mineral scratches calcite but is scratched by apatite what is the minerals hardness?
Somewhere between 3 and 5 on the Mohs scale of relative mineral hardness...
Can apatite be scratched by quartz?
Quartz is harder than apatite, quartz being a 7 on the Mohs mineral hardness scale and apatite being a 5.
What two minerals are harder than calcite but softer than quartz?
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.
Which minerals can scratch apatite?
Minerals that can scratch apatite include fluorite, quartz, topaz, and corundum. These minerals have a higher hardness level than apatite on the Mohs scale, which allows them to scratch apatite.
What is the mineral that can scratch fluorite but not quartz?
There are many, anything that has a hardness greater than 4 and less than 7, like Plagioclase. Just listing the ones on the Mohs scale, there's apatite and orthoclase.
Which mineral would scratch calcite but not apatite?
Fluorite would be able to scratch calcite but not apatite, as fluorite has a higher hardness than calcite but a lower hardness than apatite on the Mohs scale.
What unknown mineral is found to scratch apatite and to be scratched by corundum?
The unknown mineral would be topaz. Topaz lies between apatite and corundum on the Mohs scale, making it capable of scratching apatite and being scratched by corundum.
What can be scratched by glass but not a penny quartz apatite topaz or gypsum?
topaz
