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Piypite
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<p>Piypite is a rare <a href="/facts/Potassium/FWPwS7Rj">potassium</a>, <a href="/facts/Copper/I8PEE8oX">copper</a> <a href="/facts/Sulfate_mineral/AQAw1nJg">sulfate mineral</a> with formula: K2Cu2O(SO4)2. It crystallizes in the <a href="/facts/Tetragonal_crystal_system/12Aop255">tetragonal system</a> and occurs as needlelike crystals and masses. Individual crystals are square in cross-section and often hollow. It is emerald green to black in color with a vitreous to greasy luster. </p><p>It was first described in 1982 for an occurrence in the Main Fracture of the <a href="/facts/Tolbachik/nyWL8Hmo">Tolbachik volcano</a>, <a href="/facts/Kamchatka_Oblast/LFBX1LaX">Kamchatka Oblast</a>, <a href="/facts/Russia/jfkCwyxn">Russia</a>. It has also been reported from <a href="/facts/Mount_Vesuvius/QdvyWY0a">Mount Vesuvius</a>, Italy, and in a <a href="/facts/Slag/LD3qEAlV">slag</a> deposit in the <a href="/facts/Bad_Ems/Tv9fVHNL">Bad Ems District</a> in the <a href="/facts/Rhineland-Palatinate/Ny2D4pbe">Rhineland-Palatinate</a>, Germany. Piypite occurs as a <a href="/facts/Volcanic_sublimate/AA2lb6VE">sublimate</a> phase in a <a href="/facts/Fumarole/BX3XEkj5">fumarole</a> environment. Associated minerals include <a href="/facts/Halite/9xEEKKT8">halite</a>, <a href="/facts/Sylvite/1q1ym0bQ">sylvite</a>, <a href="/facts/Langbeinite/m5KsDWQM">langbeinite</a>, <a href="/facts/Tenorite/luwtRvF1">tenorite</a>, <a href="/facts/Hematite/716YBzGr">hematite</a>, tolbachite, dolerophanite, <a href="/facts/Urusovite/ueF9yNTt">urusovite</a>, <a href="/facts/Aphthitalite/oypxf8xM">aphthitalite</a>, ponomarevite, <a href="/facts/Cotunnite/YLtTSI1l">cotunnite</a>, chalcocyanite, sofiite, <a href="/facts/Euchlorine/TjW6serC">euchlorine</a>, averievite, fedotovite, <a href="/facts/Alarsite/cTNpBNNY">alarsite</a>, alumoklyuchevskite, nabokoite and <a href="/facts/Lammerite/wUaM6e10">lammerite</a> at the <a href="/facts/Type_locality_(geology)/ky6QjASt">type locality</a> in Kamchatka. On Vesuvius, it occurs with <a href="/facts/Paratacamite/LFSeDd0S">paratacamite</a>. </p>