| Name: | Hilgardite Hgr |
| IMA Chemistry: | Ca2B5O9Cl·H2O |
| Chemistry Elements: | The mineral Hilgardite contains elements: Calcium (Ca) Boron (B) Oxygen (O) Chlorine (Cl) Hydrogen (H) |
| Country of Type Locality: | United Kingdom |
| Year First Published: | 1937 |
| IMA Status: | Approved,Grandfathered |
| Status Notes: | Hurlbut C S, Taylor R E (1937) Hilgardite, a new mineral species from Choctaw Salt Dome, Louisiana, American Mineralogist 22, 1052-1057 |
| Structural Group Name: | Hilgardite |
| Fleischer's Group Name: | |
| Crystal Systems: | triclinic|monoclinic |
| Oldest Known Age: | 359 Million Years Ago |
| Mohs Hardness: | 5.0 |
| Diaphaneity: | 2.0 |
| Specific Gravity: | 2.69 |
| More Info: | Search Wikipedia: Hilgardite (Wiki) Search Mindat: Hilgardite Search Web Mineral DB: Hilgardite |