1 When Snapchat decides to IPO and sell stock to the public on a stock exchange â NYSE, Nasdaq, etc.  If somehow you knew the Snapchat team and got a chance to invest with them. I.E. you give them money directly so they can invest it back into the company and in return they give you stock.
Extrusive igneous rocks, also known as volcanic rocks, are formed at the crust's surface as a result of the partial melting of rocks within the mantle and crust. Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate.
Best Answer: Igneous rocks form from a melt of molten rock (magma, or lava) and can be Plutonic (intrusive) or Volcanic (extrusive). Plutonic rocks: * Generally form/solidify underground.Most commonly within magma tubes. * Have relatively large crystals.xtrusive rocks form from lava at or above the ground, and intrusive rocks form from magma below the ground. Granite is intrusive, pumice is extrusive or this: Igneous Rock, rock formed when molten or partially molten material, called magma, cools and solidifies.