Chemistry:Dypingite
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| Dypingite | |
|---|---|
 Dypingite (white rosettes) with other minerals, from Pedrera de l'Àngel, Montseny Massif, Gualba, Barcelona, Spain | |
| General | |
| Category | Carbonate minerals |
| Formula (repeating unit) | Mg5(CO3)4(OH)2·5H2O |
| Strunz classification | 5.DA.05 |
| Dana classification | 16b.07.02.01 |
| Crystal system | Monoclinic Unknown space group |
| Identification | |
| Formula mass | 485.65 g/mol |
| Color | White |
| Crystal habit | Globular – spherical to rounded forms (e.g. wavellite) |
| Tenacity | Brittle |
| |re|er}} | Pearly |
| Streak | White to grey |
| Diaphaneity | Semitransparent |
| Specific gravity | 2.15 |
| Optical properties | Biaxial (+) |
| Refractive index | nα = 1.508 nβ = 1.510 nγ = 1.516 |
| Birefringence | δ = 0.0080 |
| Pleochroism | Colorless |
| Ultraviolet fluorescence | Fluorescent and phosphorescent: Short-wave UV = grey blue, Long-wave UV = light blue |
| References | [1][2][3] |
Dypingite is a hydrated magnesium carbonate mineral with the formula: Mg5(CO3)4(OH)2·5H2O. Its type locality is the Dypingdal serpentine-magnesite deposit, Snarum, Norway. Synthetic dypingite is known as heavy magnesium carbonate.
It is found in the hardened cement paste of low-CO
2 footprint MgO-cements after their hydration.[4]
References
- ↑ Handbook of Mineralogy
- ↑ Webmineral data
- ↑ Mindat
- ↑ Zhou, Zeyu; Bernard, Ellina; Rentsch, Daniel; Lothenbach, Barbara (2026-08-01). "Hydration and strength development of MgO-nesquehonite-metakaolin binders". Cement and Concrete Research 206. doi:10.1016/j.cemconres.2026.108245. ISSN 0008-8846. https://www.sciencedirect.com/science/article/pii/S0008884626001146.
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