| Name: | Tweddillite Twe |
| IMA Chemistry: | CaSrMn3+2Al(Si2O7)(SiO4)O(OH) |
| Chemistry Elements: | The mineral Tweddillite contains elements: Calcium (Ca) Strontium (Sr) Manganese (Mn) Aluminum (Al) Silicon (Si) Oxygen (O) Hydrogen (H) |
| Country of Type Locality: | South Africa |
| Year First Published: | 2001 |
| IMA Status: | Approved,Renamed |
| Status Notes: | Armbruster T, Gnos E, Dixon R, Gutzmer J, Hejny C, Döbelin N, Medenbach O (2002) Manganvesuvianite and tweddillite, two new Mn^3+^-silicate minerals, Mineralogical Magazine 66, 137-150 Name changed from tweddillite to manganipiemontite-(Sr): Armbruster T, Bonazzi P, Akasaka M, Bermanec V, Chopin C, Giere R, Huess-Assbichler S, Liebscher A, Menchetti S, Pan Y, Pasero M (2006) Recommended nomeclature of epidote-group minerals, European Journal of Mineralogy 18, 551-567 Name changed back to tweddillite: Revheim O, King V T (2016) Epidote supergroup nomenclature: The names hancockite, niigataite and tweddillite reinstated. Mineralogical Magazine 80, 877-880 |
| Structural Group Name: | Clinozoisite, Epidote |
| Fleischer's Group Name: | epidote |
| Crystal Systems: | monoclinic |
| Oldest Known Age: | 1054 Million Years Ago |
| More Info: | Search Wikipedia: Tweddillite (Wiki) Search Mindat: Tweddillite Search Web Mineral DB: Tweddillite |