Pigments (L24) Flashcards

1
Q

If applied to a surface harder than itself, a mineral can be used as an ____

A

artistic medium

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2
Q

for most minerals, what must happen to produce a workable pigment in a suspension or paste?

A

they have to be crushed, powdered, and mixed

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3
Q

What were the first paints probably made out of?

A

basic mixtures of pigment, animal fats, possibly clay, as well as “filler” material to help it stick

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4
Q

What is Hematite?

A

an Iron Oxide used as red ochre

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5
Q

What is Limonite?

A

An iron oxyhydroxide used as yellow ochre

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6
Q

What was an early form of the method “fresco”?

A

Egyptian aritsts covered limestone walls of their tombs with a fine layer of plaster, onto which they painted various scenes

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7
Q

what did early Egyptian painters usually use?

A

black, red, yellow, brown, blue, and green

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8
Q

In what other way did Egyptians use pigments?

A

as cosmetics

red ochre for lips
eye-makeup or “Kohl” containing several diff powdered minerals

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9
Q

What is Pigment Vermillion and what is it famous for?

A

made from the mineral cinnabar used by the Roman’s to paint the face of Jupiter’s statue and still used in Chinese caligraphy

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10
Q

In what other way did Romans use Pigment Vermillion?

A

as it is toxic when ingested, romans would sentence criminals to work in the cinnabar mines

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11
Q

What rock was used to create the color blue?

A

Lapis Lazuli (consists of mineral lazurite)

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12
Q

Why is it called “Royal blue”

A

b/c it was difficult to obtain and super expensive so it was reserved for paintings of religious significance or for royalty

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13
Q

What mineral created the pigment green?

A

a green coloured copper silicate hydroxide mineral called dioptase

reserved for depictions of religious icons as it was rare

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14
Q

What mineral did Queen Elizabeth 1 use as cosmetics?

A

Cerussite (lead carbonate) which is very poisonous

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15
Q

What is hematite and mica used in to this day?

A

hematite - red paint and lipstick
mica - adds a glitter effect to lipstick and eyeshadow

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16
Q

Paint consists of 2 things:

A

pigment - gives color to paint (sold as fine powder usually)

Binder - what holds the pigment in suspension and adheres it to a surface

17
Q

What are 3 common natural inorganic pigments

A

Vermillion
Terre Verte
Ultramarine or Royal Blue

18
Q

What is gesso and how is it used by artists today?

A

Gesso is basically suspension of gypsum and a binder

used as a primer so that the colored paints will adhere better to the surface

19
Q

What are Artifical Inorganic Pigments:

A

colored pigments that are produced chemically rather than found in nature

20
Q

What is one of the major advantages of artificial pigments?

A

they allow for better “quality control” of pigments

21
Q

What 2 forms do Organic Pigments include?

A

both Natural forms and Manufactured synthetic forms