Ex Ruth Coulsell Collection No. 4132. A sulphate that has a bad effect of paper labels, as can be seen! The label no longer is in contact with the specimen. Labelled as simply Teruel, but only one sub locality in Mindat, so assuming that is where it is from.
Albite Amethyst Analcime Anatase Anglesite Aragonite Azurite Barite Brochantite Calcite Cassiterite Cerussite Chabazite Chalcopyrite Chrysocolla Copper Crocoite Cuprite Dolomite Fluorapatite Fluorite Galena Goethite Gold Gypsum Hematite Hemimorphite Libethenite Magnetite Malachite Mimetite Natrolite Phillipsite Pyrite Pyromorphite Quartz Siderite Silver Smithsonite Smoky Quartz Sphalerite Thomsonite Unidentified Species Wavellite Wulfenite