IMA mineral species
Kieserite
Mg(SO₄)(H₂O)
Sulfate mineral.
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Properties
⛏ Mohs hardness3.5
💅🪙🍶🔪💎
A copper coin scratches it.
🔷 Monoclinic✏️ streak white
| Chemical formula | Mg(SO₄)(H₂O) |
|---|---|
| Elements | Mg, S, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 3.5 |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Ksr |
| Nickel–Strunz class | 7.CB.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3.5: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
🌍 Where it's found
Type locality (where it was first described): Staßfurt, Germany
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
- Kieserite on Mindat.org
- Wikipedia article
- Wikidata item Q388053 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Monoclinic
YellowGrayWhite & Clear
Soft, Scratches Easily