Name: | Howlite How |
Specimens in Collection: | |
IMA Chemistry: | Ca2SiB5O9(OH)5 |
Chemistry Elements: | The mineral Howlite contains elements: Calcium (Ca) Silicon (Si) Boron (B) Oxygen (O) Hydrogen (H) |
Country of Type Locality: | Canada |
Year First Published: | 1868 |
IMA Status: | Approved,Grandfathered |
Status Notes: | Dana J D, Brush G J (1868) 601. Howlite, in A System of Mineralogy, Fifth Edition, John Wiley and Sons (New York) 598-598 |
Structural Group Name: | |
Fleischer's Group Name: | |
Crystal Systems: | monoclinic |
Oldest Known Age: | 359 Million Years Ago |
Mohs Hardness: | 3.5 |
Diaphaneity: | 2.0 |
Specific Gravity: | 2.56 |
More Info: | Search Wikipedia: Howlite (Wiki) Search Mindat: Howlite Search Web Mineral DB: Howlite |