释义 |
Definition of limonite in English: limonitenoun ˈlʌɪmənʌɪtˈlaɪməˌnaɪt mass nounAn amorphous brownish secondary mineral consisting of a mixture of hydrous ferric oxides, important as an iron ore. Example sentencesExamples - Picture richly wooded hill country possessing beds of limonite with New England's richest iron ore and plentiful streams with abundant mill seats.
- This crystal was glassy and was found associated with smoky quartz, microcline-perthite, biotite, zircon, bastnasite, and limonite after siderite.
- The associated minerals are not remarkable on the specimens; only limonite and some secondary lead minerals form in the matrix.
- They noted that good pseudomorphs of limonite after pyrite, both as cubes and as pyritohedra, are common, especially in bodies of massive pyrite.
- Oxidation of the deposit is quite extensive, and limonite is common; therefore, although I did not observe goethite, it is probably present.
- In this specimen, limonite (an iron oxide) contributes to the bright central arc, while fine spherules of hematite (another iron oxide) suffuse the quartz with a purplish hue.
- In the flats surrounding the veins commercial iron deposits were found as limonite that was derived from the oxidation of iron carbonates (ankerite and/or siderite).
- The common presence of limonite suggests that there was a significant quantity of pyrite in the area prior to oxidation.
- Some of the turquoise from their mine contains limonite intergrown with thin layers of native gold.
- The phenakite is also associated with albite, limonite, smoky quartz, and topaz and is often overlooked because it resembles quartz.
- Some of the cavities contain bits of iron oxides, and relatively sharp octahedra have been found on weathered pseudomorphs of limonite after pyrite.
- The first, and highest-temperature, period is characterized by the crystallization of phlogopite and limonite on cavity walls.
- The irregular topography of this bedding surface is covered by a thin veneer of micrite with limonite disseminated throughout.
- The lower Cubagua Formation consists of gray shale with glauconite, abundant pyrite nodules, gray limonite, and some sandy intercalation with fine clastics probably carried out by turbidity currents.
- The ore, a mixture of ‘psilomelane’ and pyrolusite with much manganiferous limonite, contains masses of cerussite.
- In the Weasel pocket, the earliest mineral to form appears to have been one of the iron-bearing carbonates that has since been oxidized to limonite.
- The walls of molds of this material are commonly lined by a thin coating of limonite.
- Although some plates are dull and stained by limonite, the clean, bright specimens are very aesthetic.
- Twenty specimens permineralized by limonite and pyrite were studied.
- Frank Knaus found crude 3.1-cm pyrite cubes covered with a crust of limonite.
Derivatives adjective Lovering, Tweto, and Lovering stated that dark yellow jarosite is an abundant constituent of the limonitic and ocherous materials in the oxidized orebodies, where it is mixed with iron oxides. Example sentencesExamples - Bed 4 comprised medium grey fossiliferous mudstone with limonitic ooids and phosphatic nodules.
- The Surface de Lion is an irregular and hardened erosional feature that is perforated by bivalves, encrusted with oysters, and covered in certain places by patchy pyritic to limonitic deposits.
- It is translucent green and forms a botryoidal layer less than 1 cm thick on a hard limonitic matrix.
- Whether or not this section also shows anomalous Ir concentration is not known but there are no limonitic layers here.
Origin Early 19th century: from German Limonit, probably from Greek leimōn 'meadow' (suggested by the earlier German name Wiesenerz, literally 'meadow ore'). Definition of limonite in US English: limonitenounˈlaɪməˌnaɪtˈlīməˌnīt An amorphous brownish secondary mineral consisting of a mixture of hydrous ferric oxides, important as an iron ore. Example sentencesExamples - The associated minerals are not remarkable on the specimens; only limonite and some secondary lead minerals form in the matrix.
- The walls of molds of this material are commonly lined by a thin coating of limonite.
- The phenakite is also associated with albite, limonite, smoky quartz, and topaz and is often overlooked because it resembles quartz.
- In the Weasel pocket, the earliest mineral to form appears to have been one of the iron-bearing carbonates that has since been oxidized to limonite.
- In the flats surrounding the veins commercial iron deposits were found as limonite that was derived from the oxidation of iron carbonates (ankerite and/or siderite).
- The first, and highest-temperature, period is characterized by the crystallization of phlogopite and limonite on cavity walls.
- The irregular topography of this bedding surface is covered by a thin veneer of micrite with limonite disseminated throughout.
- In this specimen, limonite (an iron oxide) contributes to the bright central arc, while fine spherules of hematite (another iron oxide) suffuse the quartz with a purplish hue.
- Oxidation of the deposit is quite extensive, and limonite is common; therefore, although I did not observe goethite, it is probably present.
- They noted that good pseudomorphs of limonite after pyrite, both as cubes and as pyritohedra, are common, especially in bodies of massive pyrite.
- Picture richly wooded hill country possessing beds of limonite with New England's richest iron ore and plentiful streams with abundant mill seats.
- The lower Cubagua Formation consists of gray shale with glauconite, abundant pyrite nodules, gray limonite, and some sandy intercalation with fine clastics probably carried out by turbidity currents.
- The common presence of limonite suggests that there was a significant quantity of pyrite in the area prior to oxidation.
- This crystal was glassy and was found associated with smoky quartz, microcline-perthite, biotite, zircon, bastnasite, and limonite after siderite.
- Twenty specimens permineralized by limonite and pyrite were studied.
- Some of the cavities contain bits of iron oxides, and relatively sharp octahedra have been found on weathered pseudomorphs of limonite after pyrite.
- Frank Knaus found crude 3.1-cm pyrite cubes covered with a crust of limonite.
- Although some plates are dull and stained by limonite, the clean, bright specimens are very aesthetic.
- Some of the turquoise from their mine contains limonite intergrown with thin layers of native gold.
- The ore, a mixture of ‘psilomelane’ and pyrolusite with much manganiferous limonite, contains masses of cerussite.
Origin Early 19th century: from German Limonit, probably from Greek leimōn ‘meadow’ (suggested by the earlier German name Wiesenerz, literally ‘meadow ore’). |