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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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Pyrite (Best Grade)

Pyrite (Best Grade)

Shiny crystal clusters and crystalline groups, this 'fools gold' is brassy and leaves a black streak.

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Ward's® Diopside

Ward's® Diopside

Pyroxene group; gray-green, coarse crystalline.

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Ward's® Pyrrhotite

Ward's® Pyrrhotite

Good grade, bronze-colored ore, massive.

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Ward's® Quartz (Chert)

Ward's® Quartz (Chert)

Light gray, compact, hard, opaque, microcrystalline silica mineral.

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Ward's® Quartz (Rock Crystal Points)

Ward's® Quartz (Rock Crystal Points)

Clear, euhedral points and sections.

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Ward's® Sulfur (Massive)

Ward's® Sulfur (Massive)

Pure, bright yellow, Frasch sulfur.

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Ward's® Topaz (Crystals)

Ward's® Topaz (Crystals)

Gemmy, sherry-colored crystals and sections approximately 3/8– 1/2"

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Ward's® Copper

Ward's® Copper

Cleaned, pure, bright, metallic native copper.

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Ward's® Greenstone

Ward's® Greenstone

Massive, chlorite-rich.

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Ward's® Sandstone (White)

Ward's® Sandstone (White)

Well-cemented, medium-grained orthoquartzite.

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Ward's® Quartzite (Green)
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Ward's® Amphibolite

Ward's® Amphibolite

Dark, coarse-grained, and composed chiefly of hornblende.

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Ward's® Andesite (Porphyry)

Ward's® Andesite (Porphyry)

Gray andesite with phenocrysts of felspar and/or hornblende.

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Ward's® Mantle Xenolith

Ward's® Mantle Xenolith

Glossy green dunite (olivine) inclusion in non-genetically related basalt. Average size: 3" x 4".

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Ward's® Cross-bedded Sandstone

Ward's® Cross-bedded Sandstone

Sawn and lacquered slab showing thinly bedded truncated layers in a well-cemented sandstone. Large hand specimen.

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Ward's® Basalt (Flood)

Ward's® Basalt (Flood)

Classic, dark; from the Columbia Plateau.

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