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Échantillons

Échantillons

Des spécimens sont disponibles pour une grande variété de procédures de test organiques et inorganiques. Les échantillons organiques peuvent être utilisés pour la dissection ou l’étude de spécimens entiers, vivants ou conservés, avec des exemples pratiques en biologie cellulaire ou dans l’analyse de la structure interne d’organes et de systèmes multicellulaires complexes. Les spécimens de roche permettent l’étude des textures, des tailles de grains et d’autres caractéristiques influencées par la pression, la température et d’autres forces naturelles, offrant un aperçu de l’histoire géologique de la Terre.

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Limestone (Coquina)

Limestone (Coquina)

Buff-colored, coarse, detrital limestone, with cemented shell fragments.

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Ward's® Limestone (Shell)

Ward's® Limestone (Shell)

Buff, coarse, crystalline “Austin Marble” with shell casts and molds.

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Ward's® Limestone (Encrinal)

Ward's® Limestone (Encrinal)

Gray with line crinoid columnal fragments.

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Ward's® Limestone (Chalk)

Ward's® Limestone (Chalk)

Light gray, earthy.

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Ward's® Limestone (Oolitic)

Ward's® Limestone (Oolitic)

Gray to buff, with numerous ooliths and fossil fragments.

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Ward's® Dolostone (Gray)

Ward's® Dolostone (Gray)

Dense and massive.

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Ward's® Marble (Coarse White)

Ward's® Marble (Coarse White)

Gray to white, coarse crystalline, carbonate rock.

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Ward's® Marble (Pink)

Ward's® Marble (Pink)

Pink/gray coarse carbonate rock.

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Ward's® Obsidian

Ward's® Obsidian

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

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Ward's® Obsidian (Brown and Black)
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Pumice (Light Gray)

Pumice (Light Gray)

Glassy; most specimens float in water.

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Quartzite

Quartzite

Fightly cemented, medium-to-coarse quartz grains.

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Ward's® Rhyolite (Gray)

Ward's® Rhyolite (Gray)

Light gray, with flow structure.

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Ward's® Sandstone (Siliceous)

Ward's® Sandstone (Siliceous)

Gray, fine to medium-grained “Berea grit”.

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Ward's® Sandstone (Red)

Ward's® Sandstone (Red)

Hematite-cemented quartz; orthoquartzite.

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Ward's® Schist (Mica)

Ward's® Schist (Mica)

Foliated biotite, coarse, silvery gray with quartz-feldspar bands.

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