十じゅう字じ石せきMeanings1nounstaurolitemineralogyA mineral that often forms cross-shaped twin crystals, hence the Japanese name 十字石 (cross stone). Used in geology and mineralogy.十じゅう字じ石せきは変へん成せい岩がんによく見みられる鉱こう物ぶつです。Staurolite is a mineral commonly found in metamorphic rocks.
