Hydrated carbonate containing hydroxyl, hydrotalcite group
Specific gravity: 2.14
Colour: Pink to yellowish or brownish white
Brugnatellite occurs as a hydrothermal alteration product lining cracks in
serpentinite, and associated with chrysotile,
brucite and aragonite
At the type locality, the Crestùn asbestos mine, Ciappanico, Torre di Santa Maria, Sondrio Province, Lombardy, Italy, brugnatellite occurs as crusts and coatings along cracks in serpentinite associated with artinite, hydromagnesite, pyroaurite, magnesite, chrysotile, aragonite and brucite (Dana).
At Monte Ramazzo, Liguria, brugnatellite occurs as an alteration product of brucite (Dana).
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