white feldspar
Definition
Noun A common, widely distributed type of feldspar mineral, typically light-colored, that is a primary component of many rocks.
Usage
"White feldspar" is a mineralogical term. It is used to identify and describe a specific, common mineral within rocks. It functions as a countable noun.
Examples
- Noun:
- The granite sample contained large crystals of white feldspar.
- Geologists identified the light-colored mineral in the pegmatite as white feldspar.
Advanced Usage
- In petrology, the specific type of "white feldspar" (e.g., albite, orthoclase) is often identified for precise rock classification.
- Under the microscope, the white feldspar was determined to be predominantly albite.
Variants and Related Words
- Albite (n): A common sodium-rich plagioclase feldspar, often appearing white.
- Orthoclase (n): A common potassium feldspar, frequently light-colored or white.
- Plagioclase (n): A series of feldspar minerals including albite, which can be white.
- Feldspar (n): The broader mineral group to which white feldspar belongs.
Synonyms
- Light-colored feldspar
- Common feldspar (when context implies the light-colored variety)
Notes on Meaning
The term "white feldspar" is a descriptive name based on the mineral's typical appearance rather than a precise scientific classification. It generally refers to the common, light-colored varieties of alkali feldspar (like orthoclase) or plagioclase feldspar (like albite) that are major constituents in igneous and metamorphic rocks.
Noun
-
a widely distributed feldspar that forms rocks
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