Jörgkellerite is an extremely rare fluoride mineral discovered in the alkaline rocks of the Khibiny Massif. It typically forms small, clear, tabular crystals within pegmatitic environments associated with late-stage hydrothermal activity.

Hardness

3-4

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineralrareTveitite-(Y) Group family

Jörgkellerite

Hardness: 3-4
Luster: Vitreous
Streak: White
Transparency: Transparent

No image

Is this jörgkellerite?

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

Often confused with

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

Often found alongside jörgkellerite

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

All properties

Chemical formula: Na₃(Na,Ca)₃Ca₆(Al,Zr)F₂₄
Mohs hardness: 3-4
Density: 3.37 g/cm³
Colors: Colorless White
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Trigonal
Crystal habit: Tabular Crystals, Clusters
Cleavage: None
Rarity: Rare
Uses: Collector
Host rock: Alkaline Pegmatites
Typical price: Not publicly traded; scientific specimen value only

Where rockhounds find jörgkellerite

Classic worldwide localities

Jörgkellerite type locality (Khibiny Massif, Russia)

Field-hunting tip

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

Common questions

How do you identify jörgkellerite?+

Mohs hardness is 3-4. It typically shows a vitreous luster. The streak is white. Common colors include colorless, white.

Where is jörgkellerite found?+

Notable localities include Jörgkellerite type locality (Khibiny Massif, Russia).

How much is jörgkellerite worth?+

Typical asking prices fall in the range of Not publicly traded; scientific specimen value only. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like jörgkellerite?+

Jörgkellerite is most often confused with Tveitite-(Y), Gagarinite-(Y). A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with jörgkellerite?+

Jörgkellerite commonly co-occurs with Aegirine, Microcline, Nepheline, Fluorite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does jörgkellerite form in?+

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

What is jörgkellerite used for?+

Jörgkellerite is used in collector.

Find jörgkellerite on the map

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