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Minerals
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Published on Nov 19, 2015
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PRESENTATION OUTLINE
1.
MINERALS
BY: RACHEL SMITH
Photo by
cobalt123
2.
Copper: color
Red to brown, tarnish green, sometimes also blue, brown, red, also black.
Photo by
dbwilldo
3.
COPPER
Metallic
2.5/3 hardness
Opaque
Igneous, Sedimentary, Madamorphic
Photo by
JoelJohnson
4.
LIMONITE
Formula: Fe0 (0H). nHg0
Color: yellow, brown, redish-brown
Streak: yellow to brown
Hardness: 4-5.5
Transparency: opaque
Photo by
RhyoR
5.
LIMONITE
Forms: does not come from crystal
Uses: pyrite, siderite, and Marcasite
Cleavage: none
Tenacity: brittle
Photo by
smiling_da_vinci
6.
Cool fact
Limonite becomes magnetic when heated.
Photo by
Remedy Loame
7.
SIDERITE
Formula: FeC03
Type: Hexagonal
Gravity: 3.7-3.9
Luster: Vitreous
Tenacity: brittle
Photo by
Pacific Northwest National Laboratory - PNNL
8.
SIDERITE
Color: light to dark brown
Light yellow, yellow-green
Greenish-brown, grey
And white
Streak: white
Photo by
Jeff-o-matic
9.
SIDERITE
Hardness: 3.5-4
Transparency: nearly opaque
Usually translucent
And rarely transparent
Photo by
BobMacInnes
10.
Cool fact
Siderite becomes attracted to magnetic fields when heated.
Photo by
Ron Schott
11.
SMITHSONITE
Formula: ZnCO3
Color: blue, green,yellow
Streak: white
Hardness: 4-5
Type: Hexagonal
Photo by
thisisbossi
12.
SMITHSONITE
Luster: greasy, pearly, dull
Temcity: Brittle
Rock type: Medamorphic
Photo by
hyperion327
13.
THE END
MINERALS BY: RACHEL SMITH
Photo by
Jeff-o-matic
Rachel Smith
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