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Schist is a medium-grade metamorphic rock with medium to large, flat, sheet-like grains in a preferred orientation (nearby grains are roughly parallel). It is defined by having more than 50% platy and elongated minerals, often finely interleaved with quartz and feldspar. These lamellar (flat, planar) minerals include micas, chlorite, talc, hornblende, graphite, and others. Quartz often occurs in drawn-out grains to such an extent that a particular form called quartz schist is produced. Schist is often garnetiferous. Schist forms at a higher temperature and has larger grains than phyllite. Geological foliation (metamorphic arrangement in layers) with medium to large grained flakes in a preferred sheetlike orientation is called schistosity

Sea salt grain on a dark background

Macro cubical pyrite on white matrix isolated on gray background

Barite or Barytes is a naturally occuring mineral made of Barium Sulphate and the source of the element Barium. It is white or colourless and crystaline with a distinct heavy density. Mined to be used in paint and paper production and in the oil industry.

Gold (Au) ore. The element associated with quartz veins and sulfides. White background. Largest producers China, Australia, Russia, Canada, USA, Mexico, South Africa, Uzbekistan

Inside protein molecule

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

Pyrolusite ore is a mineral basically composed of manganese dioxide.

natural mineral on a green background with crystal quartz crystals is a beautiful background and an abstract, macro

Pegmatite rock close up with many crystals.

closeup of sample of natural mineral from geological collection - Galena and Sphalerite crystals on quartz rock isolated on white background

Topaz crystal isolated on the white background.

macro mineral stone heulandite on a white background close up

crystaline Barite or Barytes mineral sample- clear or translucent dense mineral collected from the UK

Natural Magnesite Mineral crystals - Magnesium Cluster

Crystal raw ore

rough diamond, crystal in an allotropic form of carbon, uncut gemstone, concept of luxury or wealth

Pegmatite mineral close up

Closeup view of piece of granite rock with crysyals isolated on a black background

A molecular model of Bisphenol A or BPA. It is a common building block in the production of many epoxy resins and plastics including polycarbonate plastic. As such it is present in a huge range of food packaging and household products. There are now concerns about its health effects, particularly its effect on children, infants and fetuses. Isolated on white.

albite mineral on white, isolated

Ball and stick 3D render from the inside of a protein molecule.

calcite from Rüssingen, Germany isolated on white background

Galena rock specimen. The raw mineral lead sulphide with a distinct weight and shiny metalic colour in a white matrix of fluorite. The most important ore of lead and a source of silver.

closeup of decorative stones placed on white background

Magnified close up of large crystal white and black granite.

Macro mineral stone Wollastonite on black background close up

Barite on fluoride

set of various Peridot stones cutout on white background

Structural model of Benzene molecule

Free Images: "bestof:Sodium-dithionite-xtal-1992-Na-coordination-3D-balls.png Ball-and-stick model of the coordination of Na<sup>+</sup> in the crystal structure of sodium"

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Hand-mounted skydiving altimeter with analogue display being used in free fall.jpg

Moda,_İstanbul.jpg

Sarychev Volcano edit.jpg

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portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg

NaCl-estructura cristalina.svg

Bispyribac-sodium 200.svg

Sodium 2-hydroxypropanoate 200.svg

Sodium methylcarbamodithioate 200.svg

Crystal facet formation.svg

Thyroid hormone synthesis-it.svg

Thyroid hormone synthesis.svg

Sodium iodoacetate structure.svg

Avibactam sodium structure.svg

Haloxyfop-Sodium Structure V.1.svg

HCP crystal structure.svg

FCC crystal structure.svg

BCC crystal structure.svg

Sodium alkyl sulfates structure.svg

Rose bengal sodium salt structure.svg

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