Dingdaohengite-(Ce) is a rare mineral belonging to the perrierite group, typically occurring in complex carbonatite-hosted environments. It is characterized by its dark, often tabular crystals and submetallic luster. It is primarily sought after by advanced systematic mineral collectors due to its restricted occurrence at the Bayan Obo deposit.

Hardness
~5.9
Mohs
Luster
Submetallic-metallic
Streak
Brown
Transparency
Translucent to opaque

Is this dingdaohengite-(ce)?

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 dingdaohengite-(ce) with a known reference. Dingdaohengite-(Ce) sits at Mohs ~5.9, softer than the next harder reference, harder than the previous one.
  • 2
    Check the streak
    Drag the specimen across an unglazed porcelain plate. Streak: brown.
  • 3
    Read the luster
    Hold the specimen under a strong light. Luster: submetallic-metallic.
  • 4
    Match the color range
    Compare against the expected color range: black, brownish black.
  • 5
    Look at form & habit
    Crystal system: monoclinic. Typical habit: euhedral crystals, prismatic, tabular.

Often confused with

Dingdaohengite-(Ce) vs. its common look-alikes, and how to tell them apart in the field.

Often found alongside dingdaohengite-(ce)

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

All properties

Chemical formula
(Ce,La)₄Fe(Ti,Fe,Mg,Fe)₂Ti₂Si₄O₂₂
Mohs hardness
~5.9
Density
4.83 g/cm³
Streak
Brown
Luster
Submetallic-metallic
Transparency
Translucent to opaque
Crystal system
Monoclinic
Crystal habit
Euhedral crystals, prismatic, tabular
Cleavage
None observed
Rarity
Rare
Uses
Collector
Host rock
In magnesian skarn in the excontact of granite within dolomitic marble

Where rockhounds find dingdaohengite-(ce)

Classic worldwide localities

  • Bayan Obo REE-Nb-Fe mine, near Baotou city, Inner Mongolian Autonomous Region, North China

Field-hunting tip

Where it forms: In magnesian skarn in the excontact of granite within dolomitic marble. If you start seeing diopside, tremolite, richterite in float, you are in the right ground. Typical habit: euhedral crystals, prismatic, tabular. Train your eye for that shape before scanning the outcrop.

Common questions

How do you identify dingdaohengite-(ce)?+
Mohs hardness is ~5.9. Luster: submetallic-metallic. The streak is brown. Common colors include black, brownish black.
Where is dingdaohengite-(ce) found?+
Notable localities include Bayan Obo REE-Nb-Fe mine, near Baotou city, Inner Mongolian Autonomous Region, North China.
Is dingdaohengite-(ce) safe to handle?+
Contains minor rare earth elements and thorium components; handle with care and wash hands thoroughly after touching.
What rocks look like dingdaohengite-(ce)?+
Dingdaohengite-(Ce) is most often confused with Allanite. A quick hardness test and a streak check separate the look-alikes faster than color alone.
What minerals are found with dingdaohengite-(ce)?+
Dingdaohengite-(Ce) commonly co-occurs with Diopside, Tremolite, Richterite, F-rich phlogopite, Humite, Chlinohumite. Spotting any of these in float or country rock is a useful trip signal.
What kind of rock does dingdaohengite-(ce) form in?+
Where it forms: In magnesian skarn in the excontact of granite within dolomitic marble. Working float back to the host body is the standard way to chase a fresh occurrence.
What is dingdaohengite-(ce) used for?+
Dingdaohengite-(Ce) is used in collector.

Find dingdaohengite-(ce) on the map

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

Download on the App StoreGet it on Google Play