Emerald City Minerals

Tourmalime

Aurichalcite – Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico.

Welcome to Trilobite Tuesday! Trilobites, while commonly seen fossilized as single individuals, were highly social animals—gathering together to mate, molt, or feed. On occasion, fossils are unearthed featuring multiple trilobites on a single slab. Discovered at a dig site near Jorf, Morocco, the specimen pictured here reveals an amazing colony of ornate 1-in- (2.5-cm-) long Devonian lichids.

Tourmaline, Pollucite, Feldspar –, Chapu Mine, Pakistan

Rutile is an oxide mineral composed of titanium dioxide (TiO2). Its crystal system is of tetragonal type.

5x Macro

Amethyst, Epidote – Las Vigas, Veracruz, Mexico

It's time for Trilobite Tuesday! In recent years, a variety of well-preserved trilobites have been uncovered from Northern Ontario’s Silurian-age Thornloe Formation—including this species of Diacalymene, which has not yet been scientifically described. Some examples can reach more than 2.4 in (6 cm) in length.

Vanadinite on Goethite – Mibladen, Midelt, Morocco

Fluorite - Bergmannisch Gluck Gegentrum Mine, Frohnau, Annaberg, Saxony, Germany

David Munsey Map Collection

Torbernite – Margabal Mine, Aveyron, Midi Pyrenees, France

Sulfur combusts on contact with air to create stunning blue lava-like rivers of light in the Kawah Ijen crater on the island of Java | Ph: Olivier Grunewald

Tourmaline – Paprok, Pakistan