Rocks and Minerals by John Finney II https://padlet.com/littlejohn0412/udfijt26wih1 Made with serendipity en-us 2017-11-01 16:09:33 UTC 2017-11-01 17:20:08 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Folder.png Quartz littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202582536

7 hardness( Moh's Scale)
Hexagonal 
Colorless streak 
Usually breaks with conchoidal fracture 
Clear, white, purple, brown , black, pink, green ,red color 
Vitreous 
2.6-2.7 Specific Gravity 
]]> 2017-11-01 16:11:34 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202582536 Feldspar littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202585380
6 hardness (Moh's Scale)
One perfect cleavage & one good cleavage (meet @ 90*)
2.6 Specific Gravity 
Crystals-->vitreous 
White streak 
Shades of off white, red , orange  brown, occasionally green 
]]> 2017-11-01 16:16:19 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202585380 Calcite littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202588361


3 hardness (Moh's Scale)
Trigonal 
2.7 Specific Gravity 
White, yellow, red, orange, blue, brown, green, gray, etc. 
White streak 
Perfect cleavage-Conchoidal fracture 
Pearly, waxy 
]]> 2017-11-01 16:21:24 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202588361 Mica littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202590511
2.5-4 (Lep), 2.5-3(Bro), 2.5-3 (Phl), 2.5-2 (Musc) (Moh's Scale)
Pearly to Vitreous 
Purple, Rosy, Silver, Dark green, Brown, Black, Yellowish-brown, Green-white
Colorless/white streak 
Flaky fracture/Perfect cleavage 
2.8-3.1 Specific Gravity 
]]> 2017-11-01 16:25:10 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202590511 Pyrite littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202599089

Metallic
Pale, brass yellow 
Greenish-black streak 
6-6.5 hardness (Moh's scale)
Poor/Indistinct cleavage 
Irregular/uneven conchoidal fracture 
4.95-5 Specific Gravity ]]> 2017-11-01 16:39:34 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202599089 Magnetite littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202601485

5.2 Specific Gravity 
5-6.5 hardness (Moh's Scale)
Black/silvery-gray color 
Black streak 
Isometric 
Metallic ]]> 2017-11-01 16:43:44 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202601485 Hematite littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202606344

5-6.5 hardness (Moh's Scale)
Red streak 
Black/Steel gray 
Metallic, earthy 
5-5.3 Specific Gravity 
Trigonal ]]> 2017-11-01 16:53:20 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202606344 Galena littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202609122

2.5+ hardness (Moh's scale) 
Lead to black-gray streak 
Bright silver color? lead gray 
Metallic, tarnishes dull 
7.4 to 7.6 Specific Gravity 
Perfect, cubic, three directions @  right angles (Cleavage) ]]> 2017-11-01 16:59:18 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202609122 Graphite littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202612414

1-2 hardness (Moh's Scale) 
Color black silver 
Metallic to dull 
Hexagonal 
2.2 Specific Gravity 
Cleavage perfect in one direction 
Flaky fracture 
Blackish/brownish streak ]]> 2017-11-01 17:05:41 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202612414 Sulfur littlejohn0412 https://padlet.com/littlejohn0412/udfijt26wih1/wish/202618742

1.5->2.5  hardness (Moh's Scale) 
White streak 
Bright yellow 
2.2.1 Specific Gravity 
Conchoidal 

]]> 2017-11-01 17:15:53 UTC https://padlet.com/littlejohn0412/udfijt26wih1/wish/202618742