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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

Rough translucent red garnet gemstone on black background

Garnet

Bright green crystalline mineral specimen on dark matrix (adamite specimen)

Adamite

Black basalt chunk with layered, cracked texture

Basalt

Green fluorite crystal on yellow mineral matrix

Fluorite

Gray-green foliated metamorphic rock specimen (schist rock sample)

Schist

Shiny dark gray coal specimen

Coal

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

Apatite

Cluster of white calcite crystals (calcite specimen)

Calcite

Rough translucent white talc mineral specimen

Talc

Green and yellow banded metamorphic rock specimen (gneiss sample)

Gneiss

Cluster of translucent brown rectangular crystals (Vanadinite crystals)

Vanadinite

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

Descloizite

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glossary.a - z

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

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