A streak plate may be used to identify which mineral property?(1 point)
Responses
color
color
luster
luster
cleavage
cleavage
tenacity
tenacity
Color
A streak plate may be used to identify the mineral property of streak.
A streak plate is used to identify the property of color in minerals. The color of a mineral is not always reliable for identification purposes, as many minerals can occur in different colors. However, the streak color is a consistent characteristic that can help in identification.
To determine the streak color of a mineral using a streak plate, follow these steps:
1. Obtain a streak plate, which is typically made of unglazed porcelain or ceramic.
2. Select a mineral specimen that you want to identify.
3. Hold the streak plate firmly in one hand.
4. Take the mineral specimen and firmly press it against the streak plate at a 45-degree angle.
5. Apply enough pressure and rub the mineral across the streak plate to leave a powdered streak.
6. Observe the color of the streak left on the plate.
The color of the streak may or may not be the same as the overall color of the mineral. For example, a mineral with a red color may leave a gray streak. It is important to note that metallic minerals typically have a characteristic metallic or shiny streak, while non-metallic minerals often leave a colored or non-metallic streak.
By comparing the color of the streak to reference materials or established mineral identification guides, you can narrow down the potential mineral possibilities. However, identifying a mineral based solely on streak color is not conclusive, and it is recommended to use other properties such as luster, cleavage, and tenacity for a more accurate identification.