Peterandresenite is an extremely rare manganese succinate mineral found in metamorphic manganese deposits. It typically forms colorless to white platy crystals and is primarily sought after by advanced collectors of rare species.
Is this peterandresenite?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch peterandresenite with a known reference. Peterandresenite sits at Mohs 3-4 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Peterandresenite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Peterandresenite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: colorless, white.
- 5Look at form & habitCrystal system: trigonal. Typical habit: platy crystals.
Often confused with
Peterandresenite vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside peterandresenite
Minerals reported to co-occur with peterandresenite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- Mn₄(H₂O)₂(C₄H₄O₄)₂
- Mohs hardness
- 3-4
- Density
- 2.42 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Transparent
- Crystal system
- Trigonal
- Crystal habit
- Platy Crystals
- Cleavage
- Perfect
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Metamorphic Manganese Deposits
- Typical price
- expensive
Where rockhounds find peterandresenite
Classic worldwide localities
- Långban, Sweden
Field-hunting tip
Look in metamorphic manganese deposits country — that is the host setting where peterandresenite typically forms. If you start seeing manganberzeliite, hausmannite, calcite in float, you are in the right ground. Field specimens usually show a platy crystals habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify peterandresenite?+
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How much is peterandresenite worth?+
What rocks look like peterandresenite?+
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Find peterandresenite on the map
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