Braitschite-(Ce) is a very rare hydrated calcium cerium borate mineral typically found in marine evaporite deposits. It usually occurs as small, delicate platy crystals or granular masses embedded within potash or halite beds. Collectors generally look for it in specialized research-grade collections focusing on rare borate mineralogy.
Is this braitschite-(ce)?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch braitschite-(ce) with a known reference. Braitschite-(Ce) sits at Mohs 3, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Streak: white.
- 3Read the lusterHold the specimen under a strong light. Luster: vitreous.
- 4Match the color rangeCompare against the expected color range: white, colorless, pink.
- 5Look at form & habitCrystal system: hexagonal. Typical habit: hexagonal, microscopic crystals, platy.
Often confused with
Braitschite-(Ce) vs. its common look-alikes, and how to tell them apart in the field.
Often found alongside braitschite-(ce)
Minerals reported to co-occur with braitschite-(ce). Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- Ca₆.₁₅Na₀.₈₅Ce₂[B₆O₇(OH)₃(O,OH)₃]₄·H₂O
- Mohs hardness
- 3
- Density
- 2.903 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Semitransparent
- Crystal system
- Hexagonal
- Crystal habit
- Hexagonal, microscopic crystals, platy
- Cleavage
- None
- Rarity
- Rare
- Uses
- Collector
- Host rock
- In anhydrite at the contact with sylvite in a thick sequence of marine evaporites, at a depth of about 1 km
Where rockhounds find braitschite-(ce)
Classic worldwide localities
- Cane Creek potash mine, about 13 km southwest of Moab, and in the CC-1 well, about 1.8 km south of that mine, Grand Co., Utah, USA
Field-hunting tip
Where it forms: In anhydrite at the contact with sylvite in a thick sequence of marine evaporites, at a depth of about 1 km. If you start seeing anhydrite, dolomite, halite in float, you are in the right ground. Typical habit: hexagonal, microscopic crystals, platy. Train your eye for that shape before scanning the outcrop.






