Les roches (à vue) Flashcards by Laurie

Marbre blanc

Métamorphique

Non follié

Variable

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Grenat

Minéral

Rouge rubis

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Métamorphique

Schiste à hornblende

Métamorphique

Follier

Moyen

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Schiste à grenat

métamorphique

Follier

Moyen

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Shale argileux

Sédimentaire

Composer d’argile

Origine détritique

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Rhyolite

Ignée

PH acide

Origine extrusive

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Microcline

Minéral

Macle effiloché

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Gabbro

Ignée

PH basique

Intrusive

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Grès

Sédimentaire

Littage

Origine détritique

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Quartzite

Métamorphique

Non follier

Variable

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Pyrite

Minéral

Clivage cubique

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Hornblende

Minéral

Vert foncé / noir

Dense

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Gneiss granitique

Métamorphique

Follier

Fort

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Gneiss

Métamorphique

Follier

Fort

Beaucoup plus d’éclat / brillant que le Gabbro

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Tourbe

Sédimentaire

Très friable

Origine biologique

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Ignée

Basalte

Ignée

Basique

Extrusive

Coquina

Sédimentaire

Coquillages

Origine biologique

Micas

Minéral

Clivage en feuillet

Quartz

Minéral

Très dur

Calcite

Minéral

Réagi au acide

+ translucide et brillant que le marbre

Plagioclase

Minéral

Strie parallèle

PH acide

Phyllade

Métamorphique

Follier

Faible

Quartize rose

Métamorphique

Non follier

Variable

Andésite

Ignée

Morceau de hornblende

Extrusive

Microconglomérat à quartz Sédimentaire Quartz-sable-gravier Origine détritique

Diorite Ignée mi-hornblende mi-plagioclase Origine intrusive

Calcaire Sédimentaire Réagi aux acide Origine chimique

Lave Ignée Faible densité Origine extrusive

Granite Ignée Quartz-microcline-plagioclase Intrusive

Conglomérat poudingue Sédimentaire Gravier arrondis Origine détritique

Calcaire fossilifère Sédimentaire Fossiles Réagi au acide Origine Biologique