Lulzacite is a rare strontium iron phosphate mineral typically found as small, reddish-brown tabular crystals. It was first described from phosphate-rich deposits in France, where it occurs within secondary mineralization zones in pegmatites.

Hardness

Mohs

Luster

Vitreous

Streak

White

Transparency

Translucent

mineralrare

Lulzacite

Hardness: 4
Luster: Vitreous
Streak: White
Transparency: Translucent

Is this lulzacite?

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

Often confused with

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

How to tell apart: Amblygonite is the harder of the two (Mohs 5.5-6 vs. 4).

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Often found alongside lulzacite

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

All properties

Chemical formula: Sr₂Fe²⁺(PO₄)₂(OH)₂
Mohs hardness: 4
Density: 3.9 g/cm³
Colors: Red Brown
Streak: White
Luster: Vitreous
Transparency: Translucent
Crystal system: Monoclinic
Crystal habit: Tabular Crystals
Cleavage: Distinct
Rarity: Rare
Uses: Collector
Host rock: Phosphate-rich Pegmatites
Typical price: $50-300 per specimen

Where rockhounds find lulzacite

Classic worldwide localities

Moulin de la Faye, Limousin, France

Field-hunting tip

Look in phosphate-rich pegmatites country — that is the host setting where lulzacite typically forms. If you start seeing apatite, goethite, quartz 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 lulzacite?+

Mohs hardness is 4. It typically shows a vitreous luster. The streak is white. Common colors include red, brown.

Where is lulzacite found?+

Notable localities include Moulin de la Faye, Limousin, France.

How much is lulzacite 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 lulzacite?+

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

What minerals are found with lulzacite?+

Lulzacite commonly co-occurs with apatite, goethite, quartz. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does lulzacite form in?+

Lulzacite typically forms in phosphate-rich pegmatites. Working float back to the host body is the standard way to chase a fresh occurrence.

What is lulzacite used for?+

Lulzacite is used in collector.

Find lulzacite on the map

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