...Charles Milton; Sat Narain Abstract Chromium deposit, found in Merume river gravels GeoRef, Copyright 2008, American Geological Institute. 1969 ...

...Charles Milton; Edward C. T. Chao Abstract The account by Kuovo and Vuorelainen on page 1098 of this issue of the discovery in Finland of eskolaite, chromic oxide, makes it of interest to report that the same mineral is a major constituent of black pebbles found in the bed of the Merume River...

..., a polymorph of CrOOH, is a rare mineral, previously described from only three locations. It is named for the type locality in Guyana where it occurs as a component of so-called “merumite” pebbles in gold and diamond placer deposits in the Merume River ( Milton and Narain 1969 ; Milton et al. 1976...

..., 45, 57, 35, 39) Combustion metamorphic rocks 5 Red Ledge Mine, Washington, Washington District (Omega District), Nevada Co., California, U.S.A. 5 (8, 20, 22, 32, 36) Chromite mine in lenses and pods in the serpentine, close to the contact with the sedimentary rocks 6 Merume River, Kamakusa...

... important questions to be made. Mcconnellite (CuCrO 2 , R $\bar{3}$ m , a  =  b  = 2.983(4) Å, c  = 17.16(3) Å) was known from only one locality – Merume River, Kamakusa, Potaro-Siparuni Region, Guyana, in hydrothermal Cr-bearing ore, so called, ‘merumite’ type (Milton et al. , 1976...

... + .01 (OH) 3 gibbsite Chester or Richmond, Massachusetts 1.568 1.568 1.587 1.5743 1.571 0.2 53.06 17.68 5.088 Larsen (1921) CrO(OH) grimaldiite Merume River, Guyana 2.155 2.155 1.975 2.095 2.107 −0.7 34.25 17.12 6.076 Milton et al. (1976) Mn 3+ O(OH) manganite...

... (Yakutia, Russia; Logvinova et al. 2008 ), Merume (Guyana; Milton & Chao 1958 ), Outokumpu (Finland; Kouvo & Vuorelainen 1958 ), and Chapada Diamantina (Bahia, Brazil; Cassedanne & Cassedanne 1980 ). The economically significant Outokumpu district in North Karelia, Finland...

... analogue, β-CrOOH. Guyanaite, β-CrOOH, is named after localities along the Merume River, Mazaruni district, Guyana ( Milton & Narain, 1969 ; Milton et al ., 1976 ), where it is found in hydrothermally formed Cr-rich alluvial shingle deposits named merumite. In these rocks, guyanaite is intergrown...