Warkite is a rare calcium-scandium-aluminum oxide mineral discovered within the refractory inclusions of the Allende meteorite. It typically occurs as tiny, microscopic platy to prismatic crystals associated with other high-temperature phases in extraterrestrial material.

Hardness
5-6
Mohs
Transparency
Transparent

Is this warkite?

3-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 warkite with a known reference. Warkite sits at Mohs 5-6, softer than the next harder reference, harder than the previous one.
  • 2
    Match the color range
    Compare against the expected color range: blue, purple likely.
  • 3
    Look at form & habit
    Crystal system: triclinic. Typical habit: platy to prismatic crystals, often as inclusions in other minerals.

Often confused with

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

Often found alongside warkite

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

All properties

Chemical formula
Ca₂Sc₆Al₆O₂₀
Mohs hardness
5-6
Density
3.70-3.78 g/cm³
Colors
BluePurple likely
Transparency
Transparent
Crystal system
Triclinic
Crystal habit
Platy to prismatic crystals, often as inclusions in other minerals
Rarity
Rare
Uses
Collector, Scientific research
Host rock
In ultra-refractory Ca, Al-rich inclusions (UR CAIs) from CM, CV, CO, and CH chondrite meteorites

Where rockhounds find warkite

Classic worldwide localities

  • Allende Meteorite, Mexico

Field-hunting tip

Where it forms: In ultra-refractory Ca, Al-rich inclusions (UR CAIs) from CM, CV, CO, and CH chondrite meteorites. If you start seeing ti-rich oxide, perovskite in float, you are in the right ground. Typical habit: platy to prismatic crystals, often as inclusions in other minerals. Train your eye for that shape before scanning the outcrop.

Common questions

How do you identify warkite?+
Mohs hardness is 5-6. Common colors include blue, purple likely.
Where is warkite found?+
Notable localities include Allende Meteorite, Mexico.
What rocks look like warkite?+
Warkite is most often confused with Grossular. A quick hardness test and a streak check separate the look-alikes faster than color alone.
What minerals are found with warkite?+
Warkite commonly co-occurs with Ti-rich oxide, Perovskite. Spotting any of these in float or country rock is a useful trip signal.
What kind of rock does warkite form in?+
Where it forms: In ultra-refractory Ca, Al-rich inclusions (UR CAIs) from CM, CV, CO, and CH chondrite meteorites. Working float back to the host body is the standard way to chase a fresh occurrence.
What is warkite used for?+
Warkite is used in collector, scientific research.

Find warkite on the map

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