Buscaste: Especímenes
Specimens are available for use in a wide variety of organic and inorganic testing procedures. Organic samples can be utilized for dissection purposes or studying whole preserved or life specimens, with practical examples in cellular biology or the internal structures of whole organs and complex multicellular systems. Rock specimens are useful for studying textures, grain sizes, and other features brought about by pressure, temperature, and other natural forces, offering a glimpse into the Earth’s geological history.
Ward's Science Essentials® Conglomerate
Supplier: Avantor
Conglomerate is a sedimentary rock made up rounded quartz pebbles.
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Ward's Science Essentials® Pyrite
Supplier: Avantor
Fools gold Brassy color which leaves a black streak.
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Ward's® Science Essentials® Andesite
Supplier: Avantor
Introduce your students to Gray Andesite with large phenocrysts of hornblende.
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Ward's Science Essentials® Pumice
Supplier: Avantor
Pumice is light colored glassy rock that floats in water.
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Ward's Science Essentials® Granite
Supplier: Avantor
Porphyritic igneous rock containing biotite, feldspar, and hornblende.
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Ward's Science Essentials® Limestone
Supplier: Avantor
Limestone is a gray calcium carbonate that will fizz with dilute HCl.
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Ward's® Science Essentials® Pegmatite
Supplier: Avantor
Pegmatite is igneous rock similar to granite but with larger crystals.
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Ward's® Limestone (Gray)
Supplier: Avantor
Fine, common limestone; massive.
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Ward's® Rhyolite (Pink)
Supplier: Avantor
Pale pink felsite, with small sanidine phenocrysts.
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Ward's® Arkose
Supplier: Avantor
Red-brown to gray, coarse-grained, containing feldspar and mica.
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Ward's® Phyllite
Supplier: Avantor
Light grayish green, fine-grained, well-foliated, schistose.
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Ward's® Kaolin (Powdered)
Supplier: Avantor
Pure kaolinite powder, 200 mesh.
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Ward's® Hornblende (Cleavage)
Supplier: Avantor
Amphibole group; dark greenish black cleavages, somewhat columnar.
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Granite (Porphyritic)
Supplier: Avantor
Coarse-grained, with microcline, biotite and horblende phenocrysts.
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Algal Stromatolite (Cynobacteria) (PreCambrian)
Supplier: Avantor
Beautifully polished and distinctive slabs or rare 2.3 billion year old fossil stromatolites. Well defined growth structures in matrix.
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Ward's® Amphibolite
Supplier: Avantor
Dark, coarse-grained, and composed chiefly of hornblende.
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Ward's® Gypsum (Satin Spar)
Supplier: Avantor
White, fibrous, silky luster.
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Ward's® Labradorite (Cleavage)
Supplier: Avantor
Feldspar group; good cleavages of pure soda lime feldspar; most show twinning and labradorescence.
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Ward's® Soil, Sands, and Gravel Set
Supplier: Avantor
Useful for weathering and erosion, soil formation, porosity and permeability, or other general earth science labs.
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Ward's® Scoria
Supplier: Avantor
Gray-to-brown basaltic, with over 50% vesicles.
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Ward's® Sandstone (Siliceous)
Supplier: Avantor
Gray, fine to medium-grained “Berea grit”.
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Schist (Mica Garnet)
Supplier: Avantor
Silvery, paragranite and muscovite-rich with medium garnet crystals.
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Ward's Science Essentials® Breccia
Supplier: Avantor
Breccia is a sedimentary rock made up of angular rock fragments.
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Ward's Science Essentials® Pink Marble
Supplier: Avantor
Pink/grey marble colored metamorphosed carbonate rock.
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Ward's Science Essentials® Rhyolite
Supplier: Avantor
Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
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Ward's Science Essentials® Diorite
Supplier: Avantor
Diorite is a mix of dark pyroxene and light andesine provides perfect representation of an intermediate igneous rock.
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Ward's® Kaolin (Massive)
Supplier: Avantor
Pure, white, earthy “China clay”.
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Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: BDH
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: BUSHNELL CORPORATION
Supplier: VWR International
Supplier: BDH