IMA mineral species

Hydrotalcite

Mg₆Al₂(CO₃)(OH)₁₆ * 4H₂O

Hydrous Mg-Al layered double hydroxide (LDH) containing carbonate anions.

Brown White & Clear

Hydrotalcite specimen — Hydrotalcite-200667.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	Mg₆Al₂(CO₃)(OH)₁₆ * 4H₂O
Elements	Mg, Al, C, O, H
Crystal system	Trigonal
Mohs hardness	2
Density	—
Streak	white
Color	—
IMA symbol	Htc
Nickel–Strunz class	5.DA.50

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

Learn more

Hydrotalcite on Mindat.org
Wikipedia article
Wikidata item Q167525 (source of this page's data – you can correct it there)