Metamorphic Q&A

Ask-a-Geologist Q&A about Metamorphic Rocks. What rocks are changed by high pressure and high temperature?

New Shipment of Grossular Garnet has arrived!

A new shipment of wonderful grossular garnet crystals have arrived. Beautiful grossular garnet mineral from Mexico is one of six varieties of garnet. Each single crystal shows the natural dodecahedral form of the garnet group. These samples, from Mexico, are approximately 0.75 to 1 inch in size.

Obsidian……Can you use it?

Here is another Ask-a-Geologist that we received. Obsidian is one of our favorite rocks. Children love this rock too! Question: What is obsidian rock used for?

Aragonite Mineral

Aragonite is a white to colorless minerals which has shades of red, yellow, orange, or brown. Aragonite is made of calcium carbonate, like calcite, and will fizz in an acid. Nice specimens of aragonite can be found in Spain, Morroco, Englad, France, Mexico and the United States, to name a few places.

My Rockin’ Collection! Sedimentary Rocks

Kids will learn about some of the Earth’s most beautiful and interesting rocks in Mini Me Geology’s Sedimentary Rock collection.

Loess – the Earth’s most fragile rock!

Loess is formed from fine (small) grained, windblown sediment in glacier or desert areas. Loess is made of mostly silt but may also have some small amounts of sand and clay. The major mineral present is quartz with minor amounts of feldspar, calcite, dolomite, and clay.

Quartz Crystals are Still a Favorite with Children

Quartz is the most common mineral found in the Earth’s crust.

Geysers

A geyser is a hot spring which ejects hot water a vapors through a crack in the rock.

How many years of college do you have to attend to become a geologist?

Our latest Ask-a-Geologist question answered! How many years do you have to attend school to become a geologist?

Amethyst is one of the most popular minerals with children

Amethyst is a common, purple form of the mineral quartz. Fairly hard, amethyst is a 7 on the Mohs hardness scale which has a range from 1 (softest) to 10 (hardest).