Tectosilicates

[@Dogue83]

Good presentation and explanation.
Cheers from the other side of the pond

[@gillesdeleuze6083]

Thanks man, nice explanation!

[@TeddyMaria-bf2fd]

Which textbooks did you use

[@hinasamal8406]

Opticam minerology is interesting fldsper crystalogeominerology

[@hinasamal8406]

Optical minerology

[@hinasamal8406]

Icate techno