Question

The diaphaneity of Gypsum mineral is:

• A. opaque
• B. transparent to translucent
• C. Opaque to translucent
• D. translucent

Hint:

Gypsum can appear see-through (transparent) or allow some light (translucent), depending on form.

Answer 1

The Correct Option is B

To determine the diaphaneity of gypsum mineral, we analyze its light-transmitting properties.

1. Understanding Gypsum Characteristics:
Gypsum is a soft sulfate mineral (CaSO₄·2H₂O) commonly found in sedimentary environments.

2. Diaphaneity of Gypsum:
- Gypsum typically exhibits a range from transparent to translucent diaphaneity.
- High-quality crystal specimens are often transparent.
- Massive forms are usually translucent.

3. Eliminating Other Options:
- "Opaque" is incorrect as gypsum is never completely opaque
- "Opaque to translucent" is incorrect as gypsum is never opaque
- "Translucent" alone is incomplete as it can also be transparent

4. Scientific References:
According to mineralogical references (Dana's System of Mineralogy, Mindat.org), gypsum's diaphaneity is properly described as transparent to translucent.

Conclusion:
The most accurate description of gypsum's diaphaneity is transparent to translucent.

Final Answer:
The correct option is: transparent to translucent.