tactite
9.9
A hard grainy rock made when hot rock touches limestone and changes its minerals
- noun
- /ˈtæktaɪt/
- Specialized
:
tactita
- During the field trip, we discovered a large outcrop of tactite that was rich in silicate minerals.
Examples
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The geologist examined the tactite sample to understand the effects of contact metamorphism on limestone.
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The museum displayed various rock types, including a stunning piece of tactite formed from heated limestone.
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Beyond the tactite windows, rain slicked the fire-gutted building across the street.
Fiction book (1992)
Surface Forms
Etymology
The word tactite is easy to remember if you think of it as a rock made where hot, melted rock and limestone 'touch'. The name links to tact- and to contact meaning 'touch', so tactite is a hard rock formed where two rocks meet and heat changes them.
