Asked by Diana Garcia on May 21, 2024
Verified
For a rock to be considered an ore, it must:
A) contain either quartz or sulfide minerals
B) contain enough of a commodity to be mined at a profit
C) contain some copper or gold
D) be shiny or otherwise noteworthy
E) be located in a mine
Commodity
A raw material or primary agricultural product that can be bought, sold, or traded, often interchangeable with other commodities of the same type.
Quartz
A hard, crystalline mineral composed of silicon dioxide, common in many rock types and valued for its clarity and variety of colors.
Sulfide Minerals
Minerals composed of sulfur combined with a metal or semimetal, often associated with the formation of ores.
- Comprehend the standards determining the classification of a rock as an ore.
Verified Answer
DE
Diego ElizondoMay 26, 2024
Final Answer :
B
Explanation :
For a rock to be considered an ore, it must contain enough of a commodity (such as minerals or metals) that it can be mined at a profit. This is what differentiates ore from simply being a rock or mineral. The presence of specific minerals like quartz or sulfide, copper, gold, physical characteristics like shininess, or the location of the rock does not solely determine its classification as an ore.
Learning Objectives
- Comprehend the standards determining the classification of a rock as an ore.