Smoky Quartz Crystal – NAM 021

Measurements:  52 x 25 x 24 mm

Description:  A smoky quartz crystal with some mica partially embedded in it. 

The termination has a few very small nicks, while the lower part of the specimen has a few pressure marks.

Weight of Specimen:  40.0 g

Chemical Composition:  SiO₂  (quartz)
                                        KAl₂(Si₃Al)O₁₀(OH_,F)₂  (mica)    

Hardness on Mohs Scale:  (quartz) 7   
                                            (mica)  2-2.5

Specimen Code:  NAM 021