Clino-ferro-suenoite is a rare member of the amphibole group found primarily in manganese-rich metamorphic environments. It typically occurs as prismatic to fibrous masses and is best identified by its association with unique manganese minerals in localities like Franklin, New Jersey.
Is this clino-ferro-suenoite?
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 clino-ferro-suenoite with a known reference. Clino-ferro-suenoite sits at Mohs 5-6 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Clino-ferro-suenoite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Clino-ferro-suenoite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: brown, yellowish-brown, gray.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: prismatic crystals, fibrous, massive.
Often confused with
Clino-ferro-suenoite vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside clino-ferro-suenoite
Minerals reported to co-occur with clino-ferro-suenoite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- ◻Mn₂Mg₅Si₈O₂₂(OH)₂
- Mohs hardness
- 5-6
- Density
- 3.3-3.6 g/cm³
- Colors
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Monoclinic
- Crystal habit
- Prismatic Crystals, Fibrous, Massive
- Cleavage
- Perfect Prismatic
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Metamorphosed Manganese-rich Ore Deposits
- Typical price
- $20-150 thumbnail to miniature
Where rockhounds find clino-ferro-suenoite
Classic worldwide localities
- Pajsberg, Sweden
- Franklin, New Jersey, USA
- Sterling Hill, New Jersey, USA
Field-hunting tip
Look in metamorphosed manganese-rich ore deposits country — that is the host setting where clino-ferro-suenoite typically forms. If you start seeing garnet, rhodonite, willemite in float, you are in the right ground. Field specimens usually show a prismatic crystals, fibrous, massive habit, so train your eye for that shape before scanning the outcrop.
Common questions
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Find clino-ferro-suenoite on the map
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