Each mineral has a unique composition and definite set of properties.
Often an alternate may be found for some of these properties.
For example there are many piezoelectric materials that will substitute for quartz in some applications.
Quartz is very abundant and can be cultured from impure quartz, so there is no reason to need a substitute for it. There is no way to substitute quartz for electronic applications.
Amethyst is purple or violet quartz, used as a gem stone.
quartz
quartz
The material used to manufacture piezoelectric crystals is quartz. Wrist-watch crystals are often made of quartz. Quartz is a transparent mineral. The statement "There are four quartz in an imperial gallon" is faulty, and logically meaningless.
Onyx and quartz are minerals that are used to make sinks and tubs.
Amethyst is purple or violet quartz, used as a gem stone.
quarts
No, there is no substitute for quartz (silicon dioxide) as it has several special properties that no other mineral has (e.g. transparent to both ultraviolet and visible light). However if you are just looking for a different mineral than quartz that can be used as a source of silicon for use in semiconductors and silicone oils and plastics, yes there are other silicon based minerals but they are more complex than quartz is chemically which sometimes makes extracting the silicon more difficult and expensive.
Quartz
Quartz!
quartz
quartz
Quartz is a widely distributed mineral that has a high economic value. They are generally used as gemstones and as building materials.
Quartz is a crystal. It is the most common mineral found on Earth and is commonly used in making watches and jewelry.
The material used to manufacture piezoelectric crystals is quartz. Wrist-watch crystals are often made of quartz. Quartz is a transparent mineral. The statement "There are four quartz in an imperial gallon" is faulty, and logically meaningless.
Talc Diamond Quartz
Color is the least reliable diagnostic mineral property because many minerals come in different varieties. For instance, amethyst and smoky quartz are all forms of quartz. Therefore, color may hint at the type of mineral but should be used in conjunction with other tests such as hardness and crystal form.