Monte Rosso Cave, Italy
Speleothems: small, 0.2-0.5 cm thick, crusts
Frequency: Very Rare
Other geologic settings: in the oxidized portions of copper sulfide deposits
Other occurrence: 1 mm thick crust or efflorescense (Shopov's system, Bulgaria)
First description of cave occurrence: Chiesi, M. & Forti, P. 1985. Tre nuovi minerali per le grotte dell'Emilia Romagna. Note di Mineralogia e Paleontologia 45: 14-18
First description of non-cave occurrence: Pisani, F. 1864. Sur une nouvelle espèce minérale du Cornouailles, la devilline. Comptes Rendus Hebdomadaires des Séances de l’Académie des Sciences 59: 813-814
Other cave locations & References: Shopov's system, Bulgaria: Shopov, Y. Y., Kostov, R. I. & Ivanov, G. I. 1985. A new Zn-Cu-Mg cave mineralization from Bulgaria (abs). 3rd International School on “Karst and Topical Problems of Speleology”, Vratza, Exped. Annual of Sofia Univ. 1: 24
Group: Sulfates
Chemical formula: CaCu4(SO4)2(OH)6·3H2O
[According to the official IMA-CNMNC List of Mineral Names (http://nrmima.nrm.se/imalist.htm)]
Deposition and stability: Small volumes of seepage and capilary water completely evaporated and caused the deposition of devilline (followed by the deposition of brochantite). The copper resulted from the weathering of the copper ore diseminated within the overlying dolomite-anhydrite bedrock.
Luster: vitreous
+ brochantite, clinochlore, gypsum (Monte Rosso Cave, Italy)
+ malachite (Shopov's system, Bulgaria)
- Monoclinic