Browse
Regions
Map
Tags
Colours
Upload

(opens in a new window)

The geosciences image and video repository
of the European Geosciences Union (opens in a new window)

Log in

Browse
Regions
Map
Tags
Colours
Upload
About
FAQ
Imprint
Privacy notice
Photo competition
Log in

Follow EGU on:

Home
Tags
Quartz

Quartz

13 items

Underground vein of purple and violet amethyst crystals running down a rough brown rock wall, edged with yellowish crusts, lit by a lamp. — Amethyst vein from Pégut, Auvergne, France Sophie Graul

False-colour micrograph of fluid and gas inclusions in quartz: blue bubble-filled shapes on a bright magenta background, one tall form shaped like a small dinosaur. — Baby Dino Bubbles in Quartz Cennet Ulukavak

Thin-section micrograph in crossed polars of a mylonite: diagonal bands of small black, grey and white quartz grains separated by thin streaks of golden-brown fine mica. — Quartz - sericite mylonite, Calamita, Elba Samuele Papeschi

Polarised-light micrograph of agate: concentric rings and round eye-like shapes in banded blue, purple and orange fibres, with dark holes and thin black layers. — Geometric Microscape of Agate Bernardo Cesare

Grey sandstone outcrop with thin, slanting layers broken into ledges and blocks, half buried among pale rippled sand dunes, with small green shrubs on the left. — Sandstone in dune field Andreas Paul

Close-up of a grey, finely foliated rock with an eye-shaped white and red quartz-rich clast around which the layers bend, a pencil tip pointing at it for scale. — Deformed augen-like clast, Punta Bianca, La Spezia Samuele Papeschi

Tall cliff of brilliant white quartz sand crisscrossed by many yellow fault and fracture lines, under a blue sky, with a person in a dark coat standing at the foot for scale. — Faults in Quartz Sands David Tanner

Close-up of white quartz on dark grey rock, finely streaked with parallel grooves, with a black camera lens cap reading SONY for scale. — Quartz Slickenside David Tanner

Black-and-white electron micrograph of a weathered mineral surface, smooth and pitted with a rough, crumbly hollow in the middle, with a 20 micrometre scale bar and data panel below. — Accessory Feldspar In Quartz Gunnar Ries

Thick cream-coloured vein of fibrous mineral running through a dark grey limestone ledge, with a field notebook lying below it for scale and a brown rucksack resting on top. — 3D outcrop of fibrous quartz-calcite veins Max Arndt

Close-up of a rock surface covered in tiny opaque brick-red quartz crystals, with scattered white, crusted cavities and thin slit-like openings. — Eisenkiesel SiO2 Konstantinos Kourtidis

Close-up of large glossy smoky quartz crystals, nearly black and translucent with sharp flat faces and a few white specks, in front of a pale background. — Smoke quartz Konstantinos Kourtidis

Rock specimen covered in white sugary quartz crystals with many pale yellowish-green ball-shaped mineral aggregates, a grey rock layer along one edge. — Laumontite Konstantinos Kourtidis

Nothing to show here yet.

No results match the current search, filter or sort.

About
FAQ
Imprint
Privacy notice
Photo competition
|
Follow EGU on:
LinkedIn
Instagram
YouTube
Facebook
Mastodon
Bluesky
EGU blogs