felspar
/'feldspɑ:/ Cách viết khác : (felspar) /'felspɑ:/
Definition
Noun: A common group of rock-forming minerals, typically light-colored, that are aluminum silicates combined with potassium, sodium, calcium, or barium. It is a primary component of many igneous, metamorphic, and sedimentary rocks.
Usage
Felspar is a technical term used primarily in geology and mineralogy to classify and describe a major mineral group in the Earth's crust. - Granite often contains large crystals of pink felspar. - The composition of the rock was analyzed and found to be rich in felspar.
Advanced Usage
- Plagioclase felspar: A series of felspar minerals ranging from sodium-rich to calcium-rich varieties.
- Plagioclase felspar is a major component of basalt.
- Alkali felspar: Felspar rich in potassium or sodium, such as orthoclase or microcline.
- Alkali felspar is common in granite.
Variants and Related Words
- Feldspar: The more common modern spelling of the same word. The terms "felspar" and "feldspar" are interchangeable, though "feldspar" is now standard in scientific literature.
- The geologist noted the presence of both quartz and feldspar.
Synonyms
- Silicate mineral: A broader category to which felspar belongs.
- Rock-forming mineral: A descriptive term highlighting its geological importance.
Notes on Meaning
The word "felspar" refers specifically to the mineral group. It is not used in compound words for other concepts. Its primary meaning is mineralogical.
Noun
-
any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
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