Natroniobite is a rare sodium niobate mineral that typically forms as a secondary alteration product in alkaline pegmatite environments. It is most frequently identified by its distinct yellowish-brown color and submetallic luster, though it is often difficult to distinguish from other niobates without chemical analysis.
Is this natroniobite?
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 natroniobite with a known reference. Natroniobite sits at Mohs 6 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Natroniobite leaves a yellowish streak.
- 3Read the lusterHold the specimen under a strong light. Natroniobite typically shows a submetallic luster.
- 4Match the color rangeCompare against the expected color range: yellow, brown, black.
- 5Look at form & habitCrystal system: orthorhombic. Typical habit: tabular crystals, massive.
Often confused with
Natroniobite vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside natroniobite
Minerals reported to co-occur with natroniobite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- NaNbO₃
- Mohs hardness
- 6
- Density
- 5.6-5.8 g/cm³
- Streak
- Yellowish
- Luster
- Submetallic
- Transparency
- Opaque
- Crystal system
- Orthorhombic
- Crystal habit
- Tabular Crystals, Massive
- Cleavage
- Distinct
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Alkaline Pegmatites
- Typical price
- $50-300 per specimen
Where rockhounds find natroniobite
Classic worldwide localities
- Kola Peninsula, Russia
- Norway
- Canada
Field-hunting tip
Look in alkaline pegmatites country — that is the host setting where natroniobite typically forms. If you start seeing albite, microcline, zircon in float, you are in the right ground. Field specimens usually show a tabular crystals, massive habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify natroniobite?+
Where is natroniobite found?+
How much is natroniobite worth?+
What rocks look like natroniobite?+
What minerals are found with natroniobite?+
What kind of rock does natroniobite form in?+
What is natroniobite used for?+
Find natroniobite on the map
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