quartz

«quartz» in Mova's school dictionary: A hard, common mineral, often clear or white, found in… — its meaning for a pupil, its sense in the lessons and examples, with 3 sentences of Mova's corpora that use it.

part of speech

noun, uncountable (quartz); adjective-like (a quartz watch)

meaning for a pupil

1) A hard, common mineral, often clear or white, found in many rocks and in sand; it can form beautiful crystals. tree →

2) A tiny piece of quartz crystal in a watch or clock that vibrates at a steady rate to keep accurate time. tree →

sense in the lessons

In science lessons on rocks and minerals, quartz is very hard (7 on the Mohs scale) and scratches glass; most sand grains are quartz. Some coloured types are gems, like purple amethyst. In everyday life «quartz watch» means a battery watch that keeps good time. Phrases: «rose quartz», «a quartz crystal», «quartz watch».

examples

• Most beach sand is made of tiny bits of quartz. tree →
• We found a shiny quartz crystal on the hike. tree →
• Quartz is harder than glass. tree →
• My watch is a quartz watch. tree →
• Amethyst is a purple kind of quartz. tree →
• Granite contains quartz, feldspar and mica. tree →
• Rose quartz is pink. tree →

note

Usually uncountable. Spelling: q-u-a-r-t-z. Myth: quartz crystals do not have healing or magic powers; they are just minerals. Hardness 7 means it scratches anything softer than 7.

In the corpora

• Granite is a speckled igneous rock with big crystals of quartz, feldspar and mica, formed deep underground.
• Quartz is one of the most common minerals, made of silicon and oxygen, and most sand is quartz.
• A quartz crystal in a watch vibrates 32,768 times every second.

Trees and pragmatics

Every meaning and example of «quartz» parsed by Mova, each sentence with its dependency tree and frames.