Ceramic Materials Database

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HORNBLENDE

Miscellaneous

• Family: None
• Region: None
• Mined At: Unspecified
• Raw Mineral: Yes
• Generic: No

Notes

(Richard Willis)

Mineral, of the ideal form (Ca, Na, K)₂^-3(Mg, Fe²⁺, Fe³⁺, Al)₅[OH(AlSi₃)O₁₁]₂
Hardness: 5-6 Density: 2.9-3.4 Insoluble in acids
Common to virtually all granites and feldspathic rocks, thus is most likely a part of most any clay used as found naturally — complex and variable, as it is a group of the amphiboles. The variation with high Fe₂O₃ content is called “basaltic”

Authors

• Richard Willis (Owner)

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