Nõuded dolokivi, fosforiidi, järvelubja, järvemuda, kristalliinse ehituskivi, kruusa, liiva, lubjakivi, meremuda, põlevkivi, savi ja turba omadustele ning lasundi lasumistingimustele ja omadustele maavaravaruna maardlas arvele võtmiseks on järgmised: ... 8) lubjakivi – karbonaatkivim, mille karbonaatsest osast moodustab kaltsiit üle 50%, MgO sisaldus on kuni 14% ja lahustumatu jäägi sisaldus kuni 25%; ...
There are many varieties of limestones but most are deposited in shallow water. Organic limestones(e.g. chalk) are formed from the calcareous skeletons of organisms; precipitated limestonesinclude oolite, which is composed of ooliths – spherical bodies formed by the precipitation of carbonate around a nucleus; and clastic limestonesare derived from fragments of pre-existing calcareous rocks.
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