1/dhkl2=1/ϑ2(S11.h2+S22.k2+S33.l2+2.S12.h.k+2.S23.k.l+2.S13.h.l) Bu denklemde "Sxx" ile verilen kısaltmalar; S11=b2.c2.sin2α S22=a2.c2.sin2β S33=a2.b2.sin2γ S12=a.b.c2(cosα.cosβ-cosγ) S23=a2.b.c(cosβ.cosγ-cosα) S13=a.b2.c(cosγ.cosα-cosβ) http://www.mta.gov.tr/v2.0/madenler/mineraller http://webmineral.com/crystal/Triclinic.shtml http://www.minerals.net/MineralMain.aspx
