https://padlet.com/vecker1/kmwgh1zftspu Made with an open mind en-us 2016-10-28 19:49:18 UTC 2016-10-28 19:53:47 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Clouds.png vecker1 https://padlet.com/vecker1/kmwgh1zftspu/wish/133999934 Minerals are naturally occurring substances formed by geological proseses . They are usualally solid and feacher a crystal structure as well as spiesific physacal propertyies of minerals include crystal struture, hardness (Mohs scale) luster ( how light reflecets light) ]]> 2016-10-28 19:54:29 UTC https://padlet.com/vecker1/kmwgh1zftspu/wish/133999934