Geology

411 Pins

Collection by

Telorast

Barite

1 Pin

Dolomite rock & dolostone are names for sedimentary rock that primarily consists of the mineral dolomite.

Dolomite rock

5 Pins

Agate

28 Pins

Calcite

10 Pins

Marble

3 Pins

Halloysite powder. (Linked page has info on the following images) B,C,D: TEM images, E: SEM image, F: AFM image

Clay minerals - hydrous aluminum silicates in phyllosilicate (sheet silicate) structures

14 Pins

Some irresistible geodes(for now all from Bill the Eggman-Flickr-couldn't stop looking!)

21 Pins

Demantoid variety of Andradite - Wikimedia Commons

Demantoid variety of Andradite

5 Pins

Sodalite with vein of orange Calcite running through

Sodalite

4 Pins

Smithsonite, Kelly Mine, near Magdalena, New Mexico

Smithsonite

8 Pins

La textura de la arena, creada por la brisa y el mar, es un detalle de las playas con fuerte oleaje.

Olivine sand grains from Hawaii. Olivine is actually very rare in sand because it is highly susceptible to weathering.

Colored scanning electron micrograph (SEM) of beach sand

Sand under microscope

39 Pins

International Minerals #15 - Anton Watzl Minerals

Fluorite

31 Pins

Millerite in geode. Millerite - nickel sulfide mineral with acicular habit

Millerite

3 Pins

Windowpane Crystal of Wulfenite on Glossan Matrix... - A love for minerals

Wulfenite

12 Pins

Aurichalcite in Calcite on limonite matrix

Aurichalcite

6 Pins

Kharan, Baluchistan, Pakistan - Nicely terminated crystal of translucent orange brown brookite with a smaller crystal on one side. Both crystals show a black shadow through the centre of the blade. One slight mark towards the base of the crystal.

Brookite

4 Pins

Asterix-shaped staurolite triple twin in mica schist

Staurolite

9 Pins

Garnet

6 Pins

Mimetite, Tsumeb Mine, Namibia - Wikipedia

Mimetite

9 Pins

Rhodochrosite

9 Pins

Diatomite layers over clay and under sands. Diatomite is formed by the accumulation of diatoms, a single-celled organism with a silica structure.

Pure diatomite is white as this sample from Armenia. It is a friable, fragile, very light-weight rock

Diatomaceous earth, diatomite

5 Pins

Quartz volcanic dyke through red sandstone. Visit the post for more.

Vertical basalt dikes cutting horizontal lava flows, Lord Howe Island, Australia

Magmatic dike cross-cutting horizontal layers of sedimentary rock, in Makhtesh Ramon, Israel

Geological dikes

6 Pins

Lab-grown

3 Pins

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А шистов гранат амфиболит от Норвегия. Широчина на пробата 16 cm.

Alkali Feldspar in Granite Pegmatite Gallery of Feldspars A pegmatite vein in a large commemorative boulder displays the excellent cleavage of alkali feldspar (most likely orthoclase), along with gray quartz and a little white plagioclase. Plagioclase, the least stable of these three minerals under surface conditions, is highly weathered in this exposure. Rocks And Gems, Healing Crystals, Minerals And Gemstones, Rocks And Minerals, Rock Textures, Planetary Science, Elemental Powers

Rocks And Gems

Healing Crystals

Minerals And Gemstones

Alkali Feldspar in Granite Pegmatite Gallery of Feldspars A pegmatite vein in a large commemorative boulder displays the excellent cleavage of alkali feldspar (most likely orthoclase), along with gray quartz and a little white plagioclase. Plagioclase, the least stable of these three minerals under surface conditions, is highly weathered in this exposure.

Garnet-Mica Schist

Cleavelandite (variety of albite).

Native American Tools

Feldspar featured

Barite var. Desert Rose from Oklahoma / Mineral Friends <3

Gneiss is a high grade metamorphic rock, meaning that it has been subjected to higher temperatures and pressures than schist. It is formed by the metamorphosis of granite, or sedimentary rock. Gneiss displays distinct foliation, representing alternating layers composed of different minerals. However, unlike slate and schist, gneiss does not preferentially break along planes of foliation because less than 50% of the minerals formed during the metamorphism are aligned in thin layers. Because of th

Halite: Hoppered pink halite crystals from the evaporation ponds. The pink color is due to the organism Halo bacterium that lives in the concentrate... Crystals And Gemstones, Natural Gemstones, Pink Crystal, Birth Stones Chart

Crystals And Gemstones

Natural Gemstones

Pink Crystal

Birth Stones Chart

Halite: Hoppered pink halite crystals from the evaporation ponds. The pink color is due to the organism Halo bacterium that lives in the concentrate...