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Geology, 
explained.

Clear essays and videos on how the Earth actually works.

FOLDFAULTDYKEUNCONFORMITY01 — DEPOSITION02 — FOLDING03 — FAULTING04 — INTRUSION05 — EROSION06 — NEW DEPOSITIONTODAYREAD THE EARTH

Tap a numbered marker to read what it shows.

Explore the geology

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Hello! I make Geoscopy: videos and long-form essays about how the Earth actually works. The geology I grew up reading was either locked in textbooks nobody outside the field opens, or chopped into 30-second clips that miss the point. Geoscopy is what I wanted instead: the real science, explained clearly, without oversimplifications.

There’s 4.5 billion years of history under your feet. I’d like to teach you to read it.

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Specimen of the weekMineral · Molybdates and Tungstates

Scheelite

Scheelite is a significant ore mineral for tungsten, one of the hardest and most heat-resistant metals on Earth.

Hardness
4.5 to 5 on the Mohs scale
Chemical Composition
Calcium tungstate (CaWO₄)
Crystal System
Tetragonal

Open the specimen

Cluster of white calcite crystals (calcite specimen)

Calcite

Fossilized fish fin embedded in a gray rock slab (limestone)

Limestone

Cluster of translucent brown rectangular crystals (Vanadinite crystals)

Vanadinite

Cluster of dark black mica mineral flakes (biotite)

Biotite

Rough brown swirled stone slab sample

Rhyolite

Dark bladed mineral crystal cluster on rocky matrix (Descloizite mineral)

Descloizite

Vivid green translucent mineral olivine crystal on rock matrix

Olivine

Cluster of shiny brown layered mica crystals on black background

Mica

Close-up of speckled gray granite rock sample

Granite

Pink mineral crystal resting on a green stone prism (apatite)

Apatite

Green chlorite schist with embedded red garnet crystals

Chlorite

Reddish-brown porous conglomerate rock specimen (bauxite ore)

Bauxite

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glossary.a - z

Geology collage featuring fossils, mountains, volcano, Earth, and letters

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