artz is extensively used as a piezoelectric material. It contains

Quartz is a naturally occurring mineral and a widely used piezoelectric material [1]. Chemically, quartz is composed of silicon dioxide (SiO2), consisting of two primary elements: silicon (Si) and oxygen [1]. Its asymmetric hexagonal crystalline structure allows it to generate an electric charge in response to mechanical stress, a phenomenon known as the direct piezoelectric effect. This property makes it indispensable in modern electronics for manufacturing frequency control products, radio, radar, and low-noise oscillators [3]. While other materials like barium titanate contain titanium (Ti) and exhibit piezoelectricity, quartz specifically contains silicon as its metallic/metalloid component [3]. Mercury (Hg) is derived from cinnabar, and tin (Sn) is not a constituent of quartz [1]. Therefore, silicon (Si) is the correct element found in quartz.

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 13: Types of Rocks & Rock Cycle > 13.5. Some Rock-Forming Minerals > p. 175
2. [3] https://www.sciencedirect.com/topics/computer-science/silicon-dioxide-sio2
3. [2] https://pmc.ncbi.nlm.nih.gov/articles/PMC7770897/