About Dravite
The brown, magnesium-rich endmember of the Tourmaline group. It's a strong grounding and protective stone, promoting practicality, self-acceptance, and auric cleansing. Connects to Earth energies.
Primary Hues
Brown, Dark Brown, Yellowish-Brown, Reddish-Brown, Greenish-Brown, Black
Geological & Scientific Details
Dravite is classified as a cyclosilicate mineral which typically crystallizes in the trigonal system. Its chemical formula is (Ca,K,Na, ▢)(Al,Fe,Li,Mg,Mn)3(Al,Cr,Fe,V)6(BO3)3(Si,Al,B)6O18(OH,F)4. Common crystal habits include parallel and elongated; acicular prisms, sometimes radiating; massive; scattered grains (in granite).
Key Geological Properties:
- Mineral Category: Cyclosilicate
- Chemical Formula: (Ca,K,Na, ▢)(Al,Fe,Li,Mg,Mn)3(Al,Cr,Fe,V)6(BO3)3(Si,Al,B)6O18(OH,F)4
- IMA Symbol: Tur[3]
- Crystal System: Trigonal
- Predominant Geological Color: Most commonly black, but can range from colorless to brown, red, orange, yellow, green, blue, violet, pink, or hues in-between. It can also be bi-colored, or even tri-colored. Rarely, it can be found as neon green or electric blue.
- Crystal Habit: Parallel and elongated; acicular prisms, sometimes radiating; massive; scattered grains (in granite)
- Cleavage: Indistinct
- Luster: Vitreous, sometimes resinous
- Streak: White
- Diaphaneity: Translucent to opaque