1 / 10

Minerals

Minerals. Definition. Minerals join together to make rocks Five Characteristics of every mineral naturally occurring inorganic solid crystal structure definite chemical composition. . Properties of Minerals. Color Luster Streak Cleavage Hardness Specific Gravity

lalasa
Download Presentation

Minerals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Minerals

  2. Definition • Minerals join together to make rocks • Five Characteristics of every mineral • naturally occurring • inorganic • solid • crystal structure • definite chemical composition.

  3. Properties of Minerals • Color • Luster • Streak • Cleavage • Hardness • Specific Gravity • Special Properties To determine what mineral you’ve got, check it’s properties

  4. ColorWhat color(s) you see • Test • Observe surface of mineral • Impurities can change the color • Color can change with age and weather

  5. LusterHow light reflects off of it • Test • Observe how mineral reflects light • Non-metal • Greasy • Pearly • Glassy • Dull (Earthy) • Metal

  6. StreakColor when mineral is a powder • Test • Observe color of powder on unglazed ceramic tile • Rub mineral across ceramic tile

  7. CleavageHow it breaks • Test • Break mineral apart to see if it splits along a flat surface • Flat surface break = cleavage • Uneven or Irregular break = fracture

  8. HardnessHow strong is it? • Test • Perform a scratch test • Use Mohr's Hardness Scale • 1- talc- fingernail scratches it • 10-diamond- only other diamonds scratch it • Harder minerals can scratch softer minerals

  9. Specific GravityDensity compared to water • Test • Place in water • Does it sink? More dense than water • Does it float? Less dense than water

  10. Special Properties • Fluorescence • Does it glow under ultraviolet (UV) light? • Magnetism • Does it act as a magnet? • Magnitite • Radioactive • Does it have radioactive properties? • Uraninite • Gives off CO2 • Calcite when vinegar is placed on it

More Related