Murram

142. Floor for natives to be paved if for cots, otherwise to be murram or chunam, say 6″ rubble or concrete, plastered.

Source: wiktionary

The southern band of schists is also seen on the southern side of the Haladgáon hills in a murram quarry and as a band separating the quartzite and manganese-ore of Gumgáon hill.

Source: wiktionary

Laterite or murram, having a tendency to harden upon exposure, is often satisfactory when traffic is light, but it tends to corrugate or break down with heavier use.

Source: wiktionary

page xxvi: Murram: Generally iron concretions formed in tropical soils, transitional to, or an early stage of, laterite formation. page 73, in figure: Brownish red loam with murram in subsoil page 75: In ferruginous tropical soils and ferrallites (Table 10) much iron released in weathering is often redeposited in the form of gravelly concretions locally termed murram. The word ‘laterite’ has been used for two distinct forms of precipitated iron.

Source: wiktionary