Dims: 2.1 x 0.9 x 0.8" (5.3 x 2.3 x 1.9 cm)
Wt: 1.53 oz. (43.5 g) w/ base
Santa Eulalia, Chihuahua, Mexico
This thumbnail specimen consists of a single Goethite stalactite which acts as the base for several other minerals. The Goethite is coated with a layer of siderite whose color ranges from pale brown to nearly black. Accompanying the siderite are a few rounded clusters of either tiny calcites or ankerites. These crystals are extremely small and intergrown (as are the siderites), so as to be almost impossible to study individually. Also intergrown with the siderite are several well-formed quartz crystals that are intact and in excellent condition. These have the standard colorlessness and vitreous luster of quartz, and are transparent and quite clear. The piece is hot-glued onto a square acrylic base.