Textile fabrics and their preparation for dyeing : with numerous engravings and diagrams (1906)
Hummel, J. J. (John James), d. 1902, Hasluck, Paul N. (Paul Nooncree), 1854-1931, Foster, A. R · Philadelphia : David McKay · leaf 18
Orthoclase has a pearly luster. … LUSTER The surface ofa mineralreflects light.Mineral reflec-tions, calledluster, orsheen, includedull, glassy,metallic, orpearly. ■^ Its not glass, butthis mineral has aglassy luster. SPLIT UP The way a min-eral splits whenbroken may helpidentify it. Thisproperty is calledcleavage. Galena(at right)…
Dyes and dyeing
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