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Mineralpedia Details for Dachiardite-Ca

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Dachiardite-Ca

Dachiardite-Ca

Formula
Ca2(Si20Al4)O48ยท13H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Twinning Common, Pseudo Octohedral 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous - Silky 
Color
white, pink, orange red 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal - Uneven 
Hardness
4-4.5 
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Dachiardite-Ca from Cape Lookout quarry, Tillamook Co., Oregon, United States

Dachiardite-Ca
            from Cape Lookout quarry, Tillamook Co., Oregon, United States

A murky white hemispherical cluster 5mm across composed of hundreds of pointed crystal. It shares a vug with snow white Mordenite-Na.

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