Technology Mineral guide a--ian_kenyon

1. WJEC AS Mineral GuideI.G.Kenyon 2. Quartz (silicate) Hardness 7, notscratched by steelNo cleavage but shows conchoidal fractureHexagonal crystalsterminated by pyramids5mm1cmQuartz…

Documents WJEC AS Mineral Guide

WJEC AS Mineral Guide I.G.Kenyon Quartz (silicate) 1cm Quartz (variety citrine) Hardness 7, not scratched by steel No cleavage but shows conchoidal fracture Hexagonal crystals…