Which element is found in both quartz and amphibole?

Which element is found in both quartz and amphibole?

• A. Iron
• B. Silicon
• C. Calcium
• D. Sodium

Answer: (B)

Silicon is the element found in both quartz and amphibole, making it the correct answer. Quartz is a mineral that is primarily composed of silicon dioxide (SiO2), which is a fundamental structure of the mineral. In contrast, amphibole minerals are a complex group of silicate minerals that also contain silicon as a significant component of their structure. Silicon plays a key role in the formation of silicate minerals, which include both quartz and amphibole, as they share silica tetrahedra in their fundamental structural units. This commonality in their composition is what links the two types of minerals together. The other elements listed—iron, calcium, and sodium—do have their own significance and occurrence in various minerals, but they are not universally present in both quartz and amphibole. Iron is mainly found in many silicate and oxide minerals, calcium is predominantly found in carbonates and plagioclase feldspar, and sodium can be present in some feldspar minerals but does not have a consistent presence in both quartz and amphibole. Therefore, silicon stands out as the shared element between quartz and amphibole.

Silicon is the element found in both quartz and amphibole, making it the correct answer. Quartz is a mineral that is primarily composed of silicon dioxide (SiO2), which is a fundamental structure of the mineral. In contrast, amphibole minerals are a complex group of silicate minerals that also contain silicon as a significant component of their structure.

Silicon plays a key role in the formation of silicate minerals, which include both quartz and amphibole, as they share silica tetrahedra in their fundamental structural units. This commonality in their composition is what links the two types of minerals together.

The other elements listed—iron, calcium, and sodium—do have their own significance and occurrence in various minerals, but they are not universally present in both quartz and amphibole. Iron is mainly found in many silicate and oxide minerals, calcium is predominantly found in carbonates and plagioclase feldspar, and sodium can be present in some feldspar minerals but does not have a consistent presence in both quartz and amphibole. Therefore, silicon stands out as the shared element between quartz and amphibole.