Gazeevite is an extremely rare calcium silicate sulfate mineral discovered in the Hatrurim Formation. It typically occurs as small tabular crystals in pyrometamorphic rocks formed under high-temperature, low-pressure conditions.

Hardness

3.5

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineralrare

Gazeevite

Hardness: 3.5
Luster: Vitreous
Streak: White
Transparency: Transparent

No image

Is this gazeevite?

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 gazeevite with a known reference. Gazeevite sits at Mohs 3.5 — softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Gazeevite leaves a white streak.
3
Read the luster
Hold the specimen under a strong light. Gazeevite 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.

Often confused with

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

mineral

Ettringite

Mohs 2

How to tell apart: Gazeevite is noticeably harder (Mohs 3.5 vs. 2).

Often found alongside gazeevite

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

All properties

Chemical formula: Ca₇(Si₆O₁₈)(SO₄)₂·(OH)₂
Mohs hardness: 3.5
Density: 2.71 g/cm³
Colors: Colorless White
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Trigonal
Crystal habit: Tabular Crystals
Cleavage: None
Rarity: Rare
Uses: Collector
Host rock: Metamorphic Pyrometamorphic Complexes
Typical price: $100-500 for rare micro-specimens

Where rockhounds find gazeevite

Classic worldwide localities

Hatrurim Formation, Israel

Field-hunting tip

Look in metamorphic pyrometamorphic complexes country — that is the host setting where gazeevite typically forms. If you start seeing gehlenite, rankinite, spurrite 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 gazeevite?+

Mohs hardness is 3.5. It typically shows a vitreous luster. The streak is white. Common colors include colorless, white.

Where is gazeevite found?+

Notable localities include Hatrurim Formation, Israel.

How much is gazeevite worth?+

Typical asking prices fall in the range of $100-500 for rare micro-specimens. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like gazeevite?+

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

What minerals are found with gazeevite?+

Gazeevite commonly co-occurs with gehlenite, rankinite, spurrite, brownmillerite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does gazeevite form in?+

Gazeevite typically forms in metamorphic pyrometamorphic complexes. Working float back to the host body is the standard way to chase a fresh occurrence.

What is gazeevite used for?+

Gazeevite is used in collector.

Find gazeevite on the map

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