semseyite

semseyite

[′sem·sē‚īt]
(mineralogy)
Pb9Sb8S21 A gray to black mineral composed of lead antimony sulfide.
References in periodicals archive ?
L Sylow = a Norwegian mathematician) ZEE Yahtzee (the 'Yacht' Game) CAE caenozoic, glycaemia, muscae (eye floaters) CEA cease, conceal CEI ceiling, perceive, conceit, caducei CI cinematheque, glycine COE coelenterate, acoelomate SAE mucosae SE sepia, ellipses, paradisean, Barotse SEE seethe, aniseed, foresee SEY Seymouria (a fossil tetrapod), semseyite ([Pb.
Luis reports that the great and renowned Herja mine near Baia Marie, Maramures, finally closed in December 2006, after who knows how many decades of yielding superb specimens of semseyite, stibnite, sphalerite, bournonite, fizelyite and other sulfides common and rare, as well as fine calcite, gypsum and quartz.
In these cavities many other sulfosalts have been found: guettardite, robinsonite, zinkenite, boulangerite, semseyite, jordanite, tetrahedrite, sulvanite, colusite, famatinite and kesterite.
wurtzite; world's richest cassiterite deposit; see Maria Francisca, Miraflores, Perez, Cerro Posokoni, Porvenir 1, Quimsacoya Huari See Maria Teresa Huari Huari See Orco Cuchillo Huayna Potosi, Bismuth, bismuthinite, Village also cassiterite, pyrite, tetrahedrite; Huayna, Huaina see carmen-Pampa, Huallatani Huayoco Wood tin Hucumarini Bismuthinite Ichucolla Old name for Monserrat Mine Illimani See Urania, Ancohuma, Palca Inquisivi See Caluyo Iscaisca Semseyite.
Diaphorite and fizelyite were first observed in Canada at the Van Silver mine, and it is the second reported occurrence in Canada for semseyite, miargyrite and pyrostilpnite.
Calcite then becomes the only carbonate, depositing with semseyite, freieslebenite and boulangerite.
One specimen shows fizelyite overgrowing semseyite, yet in another part of the vug semseyite occurs on fizelyite, the only evidence of their co-deposition.
At the Van Silver deposit semseyite occurs as tabular gray crystals up to 3 mm in size, often in parallel growth.
so I made one, to help out my Herja mine suite, with its semseyite, berthierite and black calcite pieces.
Andorite Aramayoite Arsenopyrite (*)Barite (*)Bismuthinite (*)Bournonite (*)Chalcopyrite (*)Enargite Galena (*)Pyrite Semseyite (*)Siderite Sphalerite (*)Stibnite (*)Tennantite-tetrahedrite Wolframite
A few semseyite crystals about 1 mm in size have been found in the Ceragiola area.
Also available from Herja were some fine specimens of semseyite in fans of small blades to 1 cm or so, the best again on a contrasting matrix of white quartz prisms; but the more typical pieces show the mineral - itself often tarnished black - on a dark sulfide matrix.