Yegorovite is a rare sodium carbonate mineral typically found in hyperalkaline igneous environments. It occurs as small, colorless to white tabular crystals that are highly soluble in water and sensitive to atmospheric moisture, requiring careful preservation.

Hardness

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineralrare

Yegorovite

Hardness: 2
Luster: Vitreous
Streak: White
Transparency: Transparent

No image

Is this yegorovite?

5-step field check

Run through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.

1
Test the hardness
Try to scratch yegorovite with a known reference. Yegorovite sits at Mohs 2 — softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Yegorovite leaves a white streak.
3
Read the luster
Hold the specimen under a strong light. Yegorovite typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: white, colorless.
5
Look at form & habit
Crystal system: trigonal. Typical habit: tabular crystals, aggregates.

Often confused with

Yegorovite vs. its common look-alikes — and how to tell them apart in the field.

Often found alongside yegorovite

Minerals reported to co-occur with yegorovite. Spotting these in float or country rock is a strong cue you are in the right ground.

All properties

Chemical formula: Na₄H₂(CO₃)₃·2H₂O
Mohs hardness: 2
Density: 1.74 g/cm³
Colors: White Colorless
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Trigonal
Crystal habit: Tabular Crystals, Aggregates
Cleavage: Perfect
Rarity: Rare
Uses: Collector
Host rock: Alkaline Pegmatites
Typical price: $50-300 per specimen

Where rockhounds find yegorovite

Classic worldwide localities

Khibiny Massif, Russia
Lovozero Massif, Russia

Field-hunting tip

Look in alkaline pegmatites country — that is the host setting where yegorovite typically forms. If you start seeing natrite, thermonatrite, serandite in float, you are in the right ground. Field specimens usually show a tabular crystals, aggregates habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify yegorovite?+

Mohs hardness is 2. It typically shows a vitreous luster. The streak is white. Common colors include white, colorless.

Where is yegorovite found?+

Notable localities include Khibiny Massif, Russia; Lovozero Massif, Russia.

How much is yegorovite worth?+

Typical asking prices fall in the range of $50-300 per specimen. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like yegorovite?+

Yegorovite is most often confused with Trona, Natron. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with yegorovite?+

Yegorovite commonly co-occurs with natrite, thermonatrite, serandite, aegirine. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does yegorovite form in?+

Yegorovite typically forms in alkaline pegmatites. Working float back to the host body is the standard way to chase a fresh occurrence.

What is yegorovite used for?+

Yegorovite is used in collector.

Find yegorovite on the map

RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.