Khamrabaevite is an extremely rare titanium-vanadium carbide mineral typically found as microscopic grains in complex geological environments. It is notable for its incredible hardness, ranking among the hardest known natural substances due to its carbide structure. Collectors usually obtain it as inclusion material or micro-mounts extracted from heavy mineral sands or igneous massifs.
Is this khamrabaevite?
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 khamrabaevite with a known reference. Khamrabaevite sits at Mohs >9, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Streak: gray.
- 3Read the lusterHold the specimen under a strong light. Luster: metallic.
- 4Match the color rangeCompare against the expected color range: dark gray.
- 5Look at form & habitCrystal system: cubic. Typical habit: encrustations.
Often confused with
Khamrabaevite vs. its common look-alikes, and how to tell them apart in the field.
How to tell apart: Streak differs, so Khamrabaevite leaves gray, Osbornite leaves gold-yellow.
How to tell apart: Khamrabaevite is noticeably harder (Mohs >9 vs. 5.5-6); streak differs, so Khamrabaevite leaves gray, Cohenite leaves gray-black.
Often found alongside khamrabaevite
Minerals reported to co-occur with khamrabaevite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- TiC
- Mohs hardness
- >9
- Density
- 10.01 g/cm³
- Colors
- Streak
- Gray
- Luster
- Metallic
- Transparency
- Opaque
- Crystal system
- Cubic
- Crystal habit
- Encrustations
- Cleavage
- None
- Rarity
- Rare
- Uses
- Collector
- Host rock
- In amygdaloidal basaltic porphyries (Chatkal Range, Russia); in spheroidal groups in granodiorites that have undergone silica metasomatism (Chinorsaisk massif, Tadzhikistan)
Where rockhounds find khamrabaevite
Classic worldwide localities
- Arashan Mts, Chatkal Ranges, Tadzhikistan (type locality)
Field-hunting tip
Where it forms: In amygdaloidal basaltic porphyries (Chatkal Range, Russia); in spheroidal groups in granodiorites that have undergone silica metasomatism (Chinorsaisk massif, Tadzhikistan). If you start seeing suessite, magnetite, iron in float, you are in the right ground. Typical habit: encrustations. Train your eye for that shape before scanning the outcrop.
Common questions
How do you identify khamrabaevite?+
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What rocks look like khamrabaevite?+
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Find khamrabaevite on the map
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