IMA mineral species

Ramsdellite

🪶 Soft, Scratches Easily

Mn⁴⁺O₂

Oxide mineral.

BlackGray

Ramsdellite specimen
Ramsdellite-216663.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness3
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💅🪙🍶🔪💎

A copper coin scratches it.

Chemical formulaMn⁴⁺O₂
ElementsMn, O
Crystal systemOrthorhombic
Mohs hardness3
Density—
Streak—
Color—
IMA symbolRmd
Nickel–Strunz class4.DB.15a

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 3: softer than a steel knife, so it scratches easily. Store it apart from harder stones.