Joalo ka ha re tseba, ho etsa libolo tsa quartz ke ho tloha qalong ea ho seha lithupa tsa quartz ho isa ho tse khutšoane. Ebe re sebelisa hlobo e khethehileng ho sila lifaha tsa quartz ho sebopeho se chitja. Kahoo re sila lifaha ka kotloloho (lithupa tse khutšoane tsa quartz) ho libolo tsa mamello tse nepahetseng? Che. Re khetha boholo bo nepahetseng ka sefe.Re na le li-sieve tse ngata tse fapaneng tse chitja. Li na le bophara bo fapaneng ba masoba. Ka mohlala, haeba u batla ho fumana libolo ka bophara 3mm. Re sebelisa masoba a 2.8mm a sefe le masoba a 3.2mm a sefe. Qetellong, re tla fumana libolo tsa quartz ka mamello ± 0.2mm. leha ho le joalo motho o lokela ho belaela hore haeba re ka ba le boholo bo nepahetseng joalo ka ho se mamellehe? Ke tlameha ho re "che". Bakeng sa lihlahisoa tsohle tsa rona tsa khalase ea quartz li tlameha ho ba le phapang ea boholo kapa boholo. U ka e etsa e nyane, empa u ka lumella mamello hore e nyamele.
