Reference

Nickelbischofite is a nickel chloride hydrate mineral with the chemical formula (\text{NiCl}_2 \cdot 6\text{H}_2\text{O}). Here are the key details about this mineral:

1. Discovery and Naming:

   • Nickelbischofite was discovered in 1979.
   • The name reflects its composition, indicating it is a nickel analogue of bischofite ((\text{MgCl}_2 \cdot 6\text{H}_2\text{O})), although they do not occur under the same conditions.

2. Physical and Chemical Properties:

   • Hardness: Approximately 1½ on the Mohs scale, indicating it is a very soft mineral.
   • Specific Gravity: 1.932 (calculated), which suggests it is relatively light.
   • Crystal System: Monoclinic.
   • It deliquesces (absorbs moisture from the air and dissolves) and is highly soluble in water.

3. Occurrence:

   • Nickelbischofite is a rare mineral found in specific geological environments, often in saline or evaporite deposits.

4. Identification and Analysis:

   • Detailed studies and identification of nickelbischofite can be found through mineral databases such as Mindat and in research publications like those available on RRuff.

For further details, here are some useful sources:

• Mindat.org
• PDF on RRuff
• American Mineralogist PDF

These sources provide comprehensive information about nickelbischofite, including its discovery, properties, and occurrence.