Kurchatovite is a relatively uncommon calcium magnesium borate mineral typically found in skarn deposits. It often occurs as fine-grained, massive material or small prismatic crystals and is primarily sought after by systematic mineral collectors.
Is this kurchatovite?
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 kurchatovite with a known reference. Kurchatovite sits at Mohs 4.5, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Kurchatovite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Kurchatovite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: pale gray.
- 5Look at form & habitCrystal system: orthorhombic. Typical habit: granular, massive, prismatic crystals.
Often confused with
Kurchatovite vs. its common look-alikes, and how to tell them apart in the field.
How to tell apart: Suanite is the harder of the two (Mohs 5.5 vs. 4.5); luster reads vitreous on Kurchatovite and silky to pearly on Suanite.
How to tell apart: Kurchatovite is noticeably harder (Mohs 4.5 vs. 3.5); luster reads vitreous on Kurchatovite and dull on Szaibélyite.
Often found alongside kurchatovite
Minerals reported to co-occur with kurchatovite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- CaMgB₂O₅
- Mohs hardness
- 4.5
- Density
- 3.02 g/cm³
- Colors
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Orthorhombic
- Crystal habit
- Granular, Massive, Prismatic Crystals
- Cleavage
- One Perfect, Parallel Elongation; Two Others, Imperfect
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Contact Metamorphosed Magnesian Skarns
Where rockhounds find kurchatovite
Classic worldwide localities
- Sakha Republic, Russia
- Kyzyl-Tas, Russia
Field-hunting tip
Look in contact metamorphosed magnesian skarns country, the host setting where kurchatovite typically forms. If you start seeing suanite, szaibelyite, ludwigite in float, you are in the right ground. Field specimens usually show a granular, massive, prismatic crystals habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify kurchatovite?+
Where is kurchatovite found?+
What rocks look like kurchatovite?+
What minerals are found with kurchatovite?+
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Find kurchatovite on the map
RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.
