Majzlanite is a rare potassium-sodium sulfate mineral found primarily in fumarole deposits. It typically occurs as small, pale yellow tabular crystals and is prized by micromount collectors due to its scarcity and distinct chemical composition.

Hardness

2.5

Mohs

Luster

Vitreous

Streak

Yellow

Transparency

Transparent

mineralrare

Majzlanite

Hardness: 2.5
Luster: Vitreous
Streak: Yellow
Transparency: Transparent

No image

Is this majzlanite?

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 majzlanite with a known reference. Majzlanite sits at Mohs 2.5 — softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Majzlanite leaves a yellow streak.
3
Read the luster
Hold the specimen under a strong light. Majzlanite typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: yellow, pale yellow.
5
Look at form & habit
Crystal system: trigonal. Typical habit: tabular crystals.

Often confused with

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

mineral

Thenardite

Mohs 2.5-3

How to tell apart: Streak differs — Majzlanite leaves yellow, Thenardite leaves white.

How to tell apart: Streak differs — Majzlanite leaves yellow, Aphthitalite leaves white.

Compare →

Often found alongside majzlanite

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

All properties

Chemical formula: K₂Na₆(SO₄)₅
Mohs hardness: 2.5
Density: 3.32 g/cm³
Colors: Yellow Pale Yellow
Streak: Yellow
Luster: Vitreous
Transparency: Transparent
Crystal system: Trigonal
Crystal habit: Tabular Crystals
Cleavage: None
Rarity: Rare
Uses: Collector
Host rock: Fumarole Deposits
Typical price: $50-300 per specimen

Where rockhounds find majzlanite

Classic worldwide localities

Tarkhan-Kut Peninsula, Crimea, Russia

Field-hunting tip

Look in fumarole deposits country — that is the host setting where majzlanite typically forms. If you start seeing aphthitalite, thenardite, halite in float, you are in the right ground. Field specimens usually show a tabular crystals habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify majzlanite?+

Mohs hardness is 2.5. It typically shows a vitreous luster. The streak is yellow. Common colors include yellow, pale yellow.

Where is majzlanite found?+

Notable localities include Tarkhan-Kut Peninsula, Crimea, Russia.

How much is majzlanite 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 majzlanite?+

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

What minerals are found with majzlanite?+

Majzlanite commonly co-occurs with Aphthitalite, Thenardite, Halite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does majzlanite form in?+

Majzlanite typically forms in fumarole deposits. Working float back to the host body is the standard way to chase a fresh occurrence.

What is majzlanite used for?+

Majzlanite is used in collector.

Find majzlanite on the map

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