IMA mineral species

Akhtenskite

🪶 Soft, Scratches Easily

MnO₂

Oxide mineral.

Akhtenskite specimen — Akhtenskite.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness2

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💅🪙🍶🔪💎

Scratches with a fingernail.

🔷 Hexagonal✏️ streak black

Chemical formula	MnO₂
Elements	Mn, O
Crystal system	Hexagonal
Mohs hardness	2
Density	—
Streak	black
Color	—
IMA symbol	Akh
Nickel–Strunz class	4.DB.15b

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

Care & Handling

🪶 Soft, Scratches Easily Mohs 2: softer than a steel knife, so it scratches easily. Store it apart from harder stones.

Learn more

Akhtenskite on Mindat.org
Wikipedia article
Wikidata item Q3607328 (source of this page's data – you can correct it there)