Answer:
False.
Step-by-step explanation:
While the chemical composition of a mineral can provide valuable information in identifying it, it is not the only factor to consider. Other properties such as crystal structure, hardness, color, and streak are also important in mineral identification.
To identify a mineral, it is necessary to perform various tests and observations. These tests may include:
1. Visual examination: Observing the mineral's color, luster (appearance of light reflecting off the mineral's surface), and transparency.
2. Hardness test: Using the Mohs scale to determine the mineral's hardness by scratching it against known minerals of different hardness levels.
3. Streak test: Rubbing the mineral against a porcelain streak plate to observe the color of the powdered mineral. The streak color may differ from the mineral's external color.
4. Crystal structure: Examining the mineral's internal arrangement of atoms. This can be done through X-ray diffraction or by visually identifying characteristic crystal shapes.
5. Cleavage and fracture: Determining how the mineral breaks when subjected to stress. Cleavage refers to the tendency of a mineral to break along smooth, flat surfaces, while fracture describes irregular or uneven breaks.
6. Density: Measuring the mineral's mass per unit volume.
7. Acid reaction: Testing the mineral's reaction to acids, such as dropping a small amount of hydrochloric acid on it and observing any effervescence.
By considering these properties and conducting tests, one can gather information to help identify a mineral accurately. Chemical composition is an important aspect, but it alone is not sufficient for identification.