Properties
| Category | Tectosilicate minerals |
|---|---|
| Formula | NaAlSi; 3O; 8 (ideal endmember) ; (Na,Ca)AlSi; 3O; 8 (Na:Ca = 100:0 to 90:10) |
| Crystal system | Triclinic |
| Color | White to gray, blueish, greenish, reddish; may be chatoyant |
| Crystal habit | Crystals commonly tabular, divergent aggregates, granular, cleavable massive |
| Cleavage | Perfect on {001}, very good on {010}, imperfect on {110} |
| Fracture | Uneven to conchoidal |
| Tenacity | Brittle |
| Mohs scale hardness | 6–6.5 |
| Luster | Vitreous, typically pearly on cleavages |
| Streak | White |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 2.60–2.65 |
From the Wikipedia article
Albite is a plagioclase feldspar mineral. It is the sodium endmember of the plagioclase solid solution series. It represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula NaAlSi3O8. It is a tectosilicate. Its color is usually pure white, hence its name from Latin, albus. It is a common constituent in felsic rocks.
Source
Source record: crystal-compendium/albite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Albite — revision id 1341804426. Text and properties from Wikipedia, licensed CC BY-SA 4.0.