Gypsum is one of the more common minerals in sedimentary environments

stalactitic

This L4-5 classified meteorite was part of the 1000 stones found in Oman the 16 March 2000 with a total mass of 450 Kg

Clarity: Opaque - Good Polish with Fine Glow

This Analcime specimen comes from the Poudrette Quarry at Mount-Saint-Hilaire and displays a nice terminated crystal

Polymict Impact Breccia | 209 grams | Lockne Impact Structure, Sweden Siderite Gypsum is one of theThis is a must have 209 gram polymict impact breccia from the Lockne Crater located approximately 21 km south of the city of stersund in northern Sweden. It is amazingly light considering its mass of 132x63x23 mm. Although not a meteorite, impactites are directly linked to them and their impacts and are probably going to be one of the rarest collection items you'll ever own. Impactite is a slag like glassy object found on the surface of the earth,