sequence of different diagenetic stages is shown in table 1.
The aim of the hereby presented research was to state the changes in hight and body mass, depending on the influence of selected paragenetic
Larsen (1942b) made a detailed study of the paragenetic
relationships in the evolution of variscite nodules in the Clay Canyon deposit, identifying six stages: (1) variscite formation, followed by fracturing and the introduction of thin black quartz veinlets; (2) banded minerals, primarily crandallite, millisite and wardite, replacing and enclosing variscite while opening up cavities through shrinkage (some variscite nodules were entirely replaced by crandallite); (3) formation of free-growing crystals of gordonite, englishite, montgomeryite and probably overite and kolbeckite in cavities; (4) a minor reversion to crandallite formation from solution as isolated oolites; (5) apatite-group minerals; and finally (6) the limonitic phase (limonite is not present inside any of the nodules).
The course deals in preparation of polished ore sections, principals of reflected light polarizing microscope, optical properties of ore minerals, common ore texture and their significance, and paragenetic
[TEXT NOT REPRODUCIBLE IN ASCII.] [Methods of correlation in paragenetic
(2005) described the paragenetic
sequence of mineralization and characterized the thermal conditions of the formation of different authigenic minerals in the crater interior.
Step 1: facies analysis (including establishing the primary porosity and permeability distributions, and the "primary aquastratigraphy"--a term newly defined in this article); Step 2: petrographic analyses (paragenetic
sequence, mapping amounts and spatial distribution of diagenetic phases); Step 3: geochemical analyses (isotopes, trace elements, fluid inclusions, etc.); Step 4: burial history and paleohydrology; Step 5: integration with extant data (especially petrophysical data), if available, and Step 6:modeling (not necessary, but desirable in at least some cases).
Samples were analyzed petrographically and by cathodoluminescence to establish a paragenetic
sequence, and individual phases drilled for geochemical analysis.
Isotopic analysis supports the proposed paragenetic
Carrollite was deposited early in the paragenetic
sequence of the varied ore minerals present in the bornite pods, and it exhibits an especially interesting variety of replacement textures with respect to the subsequently deposited chalcopyrite and bornite.
Examination of hand samples or thin sections also allows for determination of the paragenetic
sequence of fracture-filling sediments and precipitates.