Eveslogite is a rare complex silicate mineral found primarily within the hyper-alkaline environments of the Kola Peninsula. It is typically identified by its fibrous to acicular habit forming delicate radial sprays or felt-like masses in cavities within alkaline pegmatites.

Hardness

5-6

Mohs

Luster

Vitreous

Streak

White

Transparency

Translucent

mineralrare

Eveslogite

Hardness: 5-6
Luster: Vitreous
Streak: White
Transparency: Translucent

No image

Is this eveslogite?

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 eveslogite with a known reference. Eveslogite sits at Mohs 5-6, softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Eveslogite leaves a white streak.
3
Read the luster
Hold the specimen under a strong light. Eveslogite typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: white, pale pink, colorless.
5
Look at form & habit
Crystal system: orthorhombic. Typical habit: fibrous aggregates, radial sprays, fine-grained masses.

Often found alongside eveslogite

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

All properties

Chemical formula: (K,Na,Ca,Ba)₁₄(Ca,Mn)₈(Fe,Mg,Fe)₈(Si,Al,Be)₄₈(O,OH,F)₁₂₈·nH₂O
Mohs hardness: 5-6
Density: 2.73 g/cm³
Colors: White Pale Pink Colorless
Streak: White
Luster: Vitreous
Transparency: Translucent
Crystal system: Orthorhombic
Crystal habit: Fibrous Aggregates, Radial Sprays, Fine-grained Masses
Cleavage: Perfect
Rarity: Rare
Uses: Collector
Host rock: Alkaline Igneous Rocks, Specifically Pegmatites
Typical price: $50-300 per specimen depending on size and quality

Where rockhounds find eveslogite

Classic worldwide localities

Khibiny Massif, Kola Peninsula, Russia
Lovozero Massif, Kola Peninsula, Russia

Field-hunting tip

Look in alkaline igneous rocks, specifically pegmatites country, the host setting where eveslogite typically forms. If you start seeing aegirine, nepheline, kalsilite in float, you are in the right ground. Field specimens usually show a fibrous aggregates, radial sprays, fine-grained masses habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify eveslogite?+

Mohs hardness is 5-6. It typically shows a vitreous luster. The streak is white. Common colors include white, pale pink, colorless.

Where is eveslogite found?+

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

How much is eveslogite worth?+

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

What minerals are found with eveslogite?+

Eveslogite commonly co-occurs with Aegirine, Nepheline, Kalsilite, Eudialyte. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does eveslogite form in?+

Eveslogite typically forms in alkaline igneous rocks, specifically pegmatites. Working float back to the host body is the standard way to chase a fresh occurrence.

What is eveslogite used for?+

Eveslogite is used in collector.

Find eveslogite on the map

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