| Name: | Hydromagnesite Hmgs |
| IMA Chemistry: | Mg5(CO3)4(OH)2·4H2O |
| Chemistry Elements: | The mineral Hydromagnesite contains elements: Magnesium (Mg) Carbon (C) Oxygen (O) Hydrogen (H) |
| Country of Type Locality: | USA |
| Year First Published: | 1828 |
| IMA Status: | Approved,Grandfathered |
| Status Notes: | Mineral described, but called magnesia alba: Wachtmeister T (1828) Analys af ett pulverformigt mineral från Norra Amerika. Kongliga Svenska Vetenskaps-Akademiens Handlingar 1828, 17-19 Mineral named: von Kobell F (1835) Ueber den hydromagnesit von Kumi auf Negroponte, Journal für Praktische Chemie 4, 80-81 |
| Structural Group Name: | |
| Fleischer's Group Name: | hydromagnesite |
| Crystal Systems: | monoclinic |
| Oldest Known Age: | 3110 Million Years Ago |
| Mohs Hardness: | 3.5 |
| Diaphaneity: | 2.0 |
| Specific Gravity: | 2.18 |
| More Info: | Search Wikipedia: Hydromagnesite (Wiki) Search Mindat: Hydromagnesite Search Web Mineral DB: Hydromagnesite |