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, 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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