Chalconatronite

Formula:  Na₂Cu(CO₃)₂ ^. 3H₂O

Origin of name:  From composition

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell:

Colour:  Greenish-blue

Diaphaneity:

Luster:

Habit:  Crystals small laths or hexagonal plates; fine-grained crusts

Hardness:

Specific gravity:  2.27

Cleavage:  None

Tenacity:

Streak:

Synonyms/varieties:

Comments: