section: identifying minerals color 1. what other factor besides air and water can change the color of a…

section: identifying minerals color 1. what other factor besides air and water can change the color of a mineral? luster 2. the way a surface reflects light is called 3. what are the three types of mineral luster? streak 4. the color of a mineral in powdered form is called the minerals 5. why is using a minerals streak more reliable than using color to identify a mineral? cleavage and fracture 6. name two minerals with cleavage, a tendency to break along smooth, flat surfaces. 7. the tendency of some minerals to break unevenly along curved or irregular surfaces is called copyright © by holt, rinehart and winston. all rights reserved. minerals of the earths crust 3 holt science and technology

section: identifying minerals color 1. what other factor besides air and water can change the color of a mineral? luster 2. the way a surface reflects light is called 3. what are the three types of mineral luster? streak 4. the color of a mineral in powdered form is called the minerals 5. why is using a minerals streak more reliable than using color to identify a mineral? cleavage and fracture 6. name two minerals with cleavage, a tendency to break along smooth, flat surfaces. 7. the tendency of some minerals to break unevenly along curved or irregular surfaces is called copyright © by holt, rinehart and winston. all rights reserved. minerals of the earths crust 3 holt science and technology

Answer

Brief Explanations:

  1. Impurities in a mineral can change its color. Different elements or compounds mixed in can cause color - variations.
  2. The way a surface reflects light is called luster.
  3. The three types of mineral luster are metallic, non - metallic, and sub - metallic. Metallic luster is shiny like a metal, non - metallic can be glassy, pearly, etc., and sub - metallic is in between.
  4. The color of a mineral in powdered form is called the mineral's streak.
  5. Using a mineral's streak is more reliable than using color to identify a mineral because a mineral's color can vary due to impurities, but its streak color is more consistent as it represents the true color of the mineral's powder.
  6. Two minerals with cleavage are mica and halite. Mica has excellent one - direction cleavage and halite has cubic cleavage.
  7. The tendency of some minerals to break unevenly along curved or irregular surfaces is called fracture.

Answer:

  1. Impurities
  2. Luster
  3. Metallic, non - metallic, sub - metallic
  4. Streak
  5. A mineral's color can vary due to impurities, but streak color is more consistent.
  6. Mica, halite
  7. Fracture