Majindeite is a rare magnesium molybdenum oxide. It occurs in a CV3 carbonaceous chondrite. It was first described from material found in Mexico (meteorite).

Hardness
3.5
Mohs
Transparency
Opaque

Is this majindeite?

2-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 majindeite with a known reference. Majindeite sits at Mohs 3.5, softer than the next harder reference, harder than the previous one.
  • 2
    Look at form & habit
    Crystal system: hexagonal. Typical habit: anhedral grains and aggregates.

Often confused with

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

Often found alongside majindeite

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

All properties

Chemical formula
Mg₂Mo₃O₈
Mohs hardness
3.5
Density
5.54 g/cm³
Transparency
Opaque
Crystal system
Hexagonal
Crystal habit
Anhedral grains and aggregates
Rarity
Rare
Uses
Collector
Host rock
In a CV3 carbonaceous chondrite

Where rockhounds find majindeite

Classic worldwide localities

  • Material found in Mexico (meteorite)

Field-hunting tip

Where it forms: In a CV3 carbonaceous chondrite. If you start seeing apatite, nb-oxide, spinel in float, you are in the right ground. Typical habit: anhedral grains and aggregates. Train your eye for that shape before scanning the outcrop.

Common questions

How do you identify majindeite?+
Mohs hardness is 3.5.
Where is majindeite found?+
Notable localities include Material found in Mexico (meteorite).
What rocks look like majindeite?+
Majindeite is most often confused with Galena, Molybdenite. A quick hardness test and a streak check separate the look-alikes faster than color alone.
What minerals are found with majindeite?+
Majindeite commonly co-occurs with Apatite, Nb-oxide, Spinel, Diopside, Awaruite. Spotting any of these in float or country rock is a useful trip signal.
What kind of rock does majindeite form in?+
Where it forms: In a CV3 carbonaceous chondrite. Working float back to the host body is the standard way to chase a fresh occurrence.
What is majindeite used for?+
Majindeite is used in collector.

Find majindeite on the map

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