paragenesis

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Related to parageneses: paragenetic sequence

paragenesis

fertility of an interspecific hybrid with either of the parent forms but not with other interspecific hybrids produced by them.
References in periodicals archive ?
The retrogression of HP metamorphic parageneses to greenschists-facies conditions occurs in relation to the exhumation of the ChMC.
El Picacho Metagabbros show greenschist-- to lower-amphibolite-facies parageneses, conspicuous mylonitic structure, no relation to metasediments, and spatial association to the Medellin Dunite.
Based upon the mineral parageneses and chemical compositions of minerals (wet chemical analysis of garnet, biotite, and amphibole monomineral fractions) and the use of different geothermometers and geobarometers, the peak metamorphic conditions in main structural zones of the Estonian basement were estimated (Koppelmaa et al.
Concurrently with these scientific advances, the beautiful microphotographs of Werner Lieber, particularly as seen in the Mineralogical Record, enlightened Western collectors concerning the "magic" of Trepca specimens, and promoted interest in mineral parageneses at the locality.
In this scheme the two most commonly occurring cleft parageneses (with subtypes, ignored here) embrace most of the finest mineralized clefts of the central massifs; Parker (1973) calls these parageneses Fundortgruppe 4 (Locality Group 4, dominant in the western and central parts of the region) and Fundortgruppe 3 (Locality Group 3, dominant in the east).
In some parageneses it appears to have formed in place of fluorapatite.
Hematite is found, both as iron roses and other habits, in approximately half of the 30 distinct parageneses in Switzerland's Alpine clefts that have been classified in detail by Parker (1973), but the finest and most abundant iron roses are found in only one of these parageneses (to be described later).
By studying the compositions, crystal morphologies and parageneses of the minerals in these deposits, and by making comparisons with similar deposits in the upper Mississippi Valley region whose origins are relatively well established, it is possible to reach some general conclusions about the environments of formation of the minerals.