About Sturmanite
A rare complex borate-sulfate, known for its bright yellow to orange hexagonal crystals. It's a stone of joy, creativity, and manifestation, stimulating the solar plexus and clearing negativity.
Primary Hues
Bright Yellow, Orange-Yellow, Brownish-Yellow, forms hexagonal prismatic or tabular crystals
Geological & Scientific Details
Sturmanite is classified as a sulfate minerals mineral which typically crystallizes in the trigonal system. Its chemical formula is Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25 H2O. Common crystal habits include hexagonal, pyramidal, prismatic.
Key Geological Properties:
- Mineral Category: Sulfate minerals
- Chemical Formula: Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25 H2O
- IMA Symbol: Strm[1]
- Crystal System: Trigonal
- Predominant Geological Color: Bright yellow to amber
- Crystal Habit: Hexagonal, pyramidal, prismatic
- Cleavage: Perfect {1010}
- Luster: Vitreous, greasy
- Streak: Pale yellow, greenish yellow, brownish orange
- Diaphaneity: Transparent to translucent
Associated Minerals
- Ettringite
- Thaumasite
- Gypsum
- Calcite
- Hematite