Hawthorne et al nomenclature of the amphibole supergroup 2033 it would be good to have consistent use of prefixes in amphibole names. Amphibole definition, any of a complex group of hydrous silicate minerals, containing chiefly calcium, magnesium, sodium, iron, and aluminum, and including hornblende, tremolite, asbestos, etc. This will be done using a spreadsheet program such as ms excel. Mar 11, 2019 mineral formulae recalculation exercisethis problem set uses the above spreadsheets to recalculate mineral formulae, assign cation site occupancy, determine relative proportions of end members, introduces important varieties of the rock forming minerals, and requires students to look critically at the data and assumptions that are built into. Nelson inosilicates pyroxenes and amphiboles inosilicates single chain silicates the single chain silicates have a basic structural unit consisting of linked sio4 tetrahedra that each share 2 of their oxygens in such a way as to build long chains of sio4.
It is presently divided into several subgroups and remains under study. Secondary prefixes, described in group 5 amphiboles with b li. Relative likelihood for the presence of naturally occurring asbestos in placer county, california. They occur in many metamorphic rocks, especially those derived from mafic igneous rocks those containing darkcoloured ferromagnesian minerals and siliceous dolomites. Fibrous amphiboles pdf and fibrous amphiboles excel asbestos references pdf and asbestos references excel special report 190. Amphclass is an ms spreadsheet with a set of functions programmed using vab visual basic for applications to perform the necessary computations for the ima97 classification of amphiboles. Amphibole quartz properties and meaning amphibole quartz crystals have inclusions, mostly consisting of yellow limonite, red hematite, white kaolinite, and pink lithium. An automatic nomenclature function is provided according to the 2012 ima report. Looking at faces that show only a single cleavage trace would show inclined extinction, except in anthophyllite. This retained the same four major amphibole groups and classifying parameters as in the 1978 scheme.
Back to rocks and minerals articles kathy feick the name amphibole is derived from the greek work amphiboles, meaning ambiguous. Amphibolite is a dark, heavy, metamorphic rock composed mostly of the mineral amphibole. Leake1 chairman department of geology and applied geology, university of glasgow, glasgow g12 8qq, u. Amphiboles are components of many igneous and metamorphic mountain rocks hornblende gabbro, diorite, amphibolite, and others and occasionally are the only constituent hornblendite, amphibolitic shales. Amphibole structures university of colorado boulder. Winamphcal stores all the calculated results in an excel file. Linking to a nonfederal website does not constitute an endorsement by cdc or any of its employees of the sponsors or the information and products presented on the website. Amphiboles are both structurally and compositionally similar to pyroxenes other large group of silicate minerals. Amphiboles are components of many igneous and metamorphic mountain rocks hornblende gabbro, diorite, amphibolite, and others and. By far the most common form of asbestos found naturally and used industrially is chrysotile asbestos, also known as white asbestos. Amphiboles a group of widely distributed rockforming crystals consisting of oxysilicate compounds of magnesium, iron, calcium, less often aluminum, and alkalies. Abstract a microsoft excel spreadsheet has been programmed to assist with classification of chemical analyses of orthorhombic and monoclinic amphiboles following the 2012 nomenclature recommended by the international mineralogical association. The group was so named by hauy in allusion to the protean variety, in composition and appearance, assumed by its minerals. Pt estimates from amphibole and plagioclase pairs in metadolerite.
A microsoft excel spreadsheet has been programmed to assist with classi. Amphiboles can be green, black, colorless, white, yellow, blue, or brown. An excel spreadsheet to classify chemical analyses of amphiboles following the ima 2012 recommendations andrew j. Inosilicates are chain silicates which have interlocking chains of silicate tetrahedra with either sio3, 1.
An excel spreadsheet to classify chemical analyses. Semeds spectra of the soil amphiboles from these locations are used to ascertain if the amphiboles came from the vermiculite deposit near libby, montana, or some other source. However, their presence in sand is generally much smaller than one would assume. Het is niet nodig om een email of andere personlijke informatie achter te laten. This version automatically plots the data in the compositionboundary. Both amphiboles and pyroxenes are very important rock forming minerals. Calculation worksheets for both lifree and libearing amphiboles are provided. The amphiboles show considerable similarity to the pyroxenes in both structure and composition. Click the pictures to get full data, click the x to remove the gem from the list. The name amphibole greek amphibolos meaning ambiguous was used by rene just hauy to include tremolite, actinolite, tourmaline, and hornblende.
Most root names apply to the mgaldominant species, e. Even when textural evidence for amphibole growth at the solidus is compelling, the standard. The presence of talc and associated amphiboles was more common in women than it was in men odds ratio, 3. Amphibole mineral data, information about amphibole, its properties and worldwide locations. Jan 16, 2007 secondary prefixes, described in group 5 amphiboles with b li. The amphibole group is composed of minerals of the general formula the crystal structure of amphibole. Nelson inosilicates pyroxenes and amphiboles inosilicates single chain silicates the single chain silicates have a basic structural unit consisting of linked sio4 tetrahedra that each share 2 of their. The reference amphibole data collected from literature are grouped in two datasets, for lifree and libearing amphiboles respectively, which include fe, fe, oh contents and the ion site. An excel spreadsheet to classify chemical analyses of amphiboles. Amphibole definition, any of a complex group of hydrous silicate minerals, containing chiefly calcium, magnesium, sodium, iron, and aluminum, and including hornblende. This distinction is possible because amphiboles known to originate from the vermiculite deposit all contain na and k that can be observed in the eds spectra.
Most belong to the monoclinic crystal system, but some belong to the orthorhombic crystal system. Introducton this report was produced in response to a motion at the ima 1986 meeting in stanford, califomi4 asking the cnmmn to produce a more simplified nomenclature of amphiboles than that currently approved, which dates from 1978. Calculating amphibole formula from electron microprobe. Amphibole and plagioclase are the main constituent minerals in these rocks.
Amphiboles earth sciences museum university of waterloo. A microsoft excel spreadsheet has been programmed to assist with classification of chemical analyses of orthorhombic and monoclinic amphiboles following the 2012 nomenclature recommended by the international mineralogical association. Amphiboles definition of amphiboles by the free dictionary. Pdf naar excel omzetten online gratis, email is niet verplicht. Amphibole, any of a group of common rockforming silicate minerals. Release amphibole classification excel spreadsheet v1. This term has since been applied to the whole group. The california geological survey cgs provides information on the geology of asbestos occurrences in california, and has developed guidelines for geologic investigations of naturally occurring asbestos in california pdf to assist geologists conducting investigations related to naturallyoccurring asbestos. The new scheme enlarges the sodic calcic amphiboles at the expense of the calcic and sodic amphiboles fig. Amphibole definition of amphibole by the free dictionary. Amphibole minerals form needlelike or prismshaped crystals. Any of a large group of structurally similar silicate minerals, such as hornblende, that have a crystalline structure consisting of a double chain of.
The angles between the cleavages, however are 56 o and 124 o making all amphiboles easy to distinguish from the pyroxenes. Amphiboles synonyms, amphiboles pronunciation, amphiboles translation, english dictionary definition of amphiboles. Amphiboles article about amphiboles by the free dictionary. Practical aspects of mineral thermobarometry amphiboles structure and sites. Probeampha spreadsheet program to classify microprobe. Excel to classify and name amphiboles or any other mineral groups oneself, and it is a. Amphibole, any of a group of common rockforming silicate minerals general considerations. The amphibole minerals are closely related in crystal structure, but they crystallize in two different systems, orthorhombic and monoclinic. Simple formula calculation instructions acrobat pdf 19kb mar30 07.
Amphibole from maderanertal, uri, switzerland fibrous green byssolite amphibole covering much of the specimen including a large clear quartz crystal. Amphibole formula spreadsheet excel 47kb mar30 07use microprobe data. Chapter 1, phase relations of metamorphic amphiboles. The amphibole structure is related to that of the pyroxenes, and consists of double chains of tetrahedra along the c axis, a pair of chains with apices facing each other forming a broad ibeam. Read more about amphibole quartz healing properties information and view the beautiful photo galleries down below. A userfriendly excel worksheet is provided for calculation with input of epma data. The following is a list of amphibole gems and minerals listed in our database. The amphiboles are classified as a group on the basis of their crystallographic properties.
Links with this icon indicate that you are leaving the cdc website the centers for disease control and prevention cdc cannot attest to the accuracy of a nonfederal website. Amphiboles are found principally in metamorphic and igneous rocks. Elke pdf meteen omzetten gescaned of normaal naar excel. All of the amphiboles except anthophyllite are monoclinic, and all show the excellent prismatic cleavage on 110. Amphiboles weather pretty easily although not as rapidly as pyroxenes. Amphibole refers not to a single mineral, but to a group of minerals. A microsoft excel spreadsheet program has been developed to calculate structural formulae of microprobederived amphibole analyses and determine. Excel spreadsheets for calculating mineral formulas for specific minerals are. Introduction amphiboles are double chain silicates sharing many physical and chemical properties with pyroxenes. Setting up mineral normalizations in excel the almostexhaustive how to derive mineral formulas from chemical analyses these instructions describe, in fair detail, how to set up mineral normalizations for a variety of minerals. Geen watermerken, geen limiet zet pdf naar excel spreadsheets om in seconden. Fe in amphibole can be estimated with high accuracies. This form of the mineral differs from the other five defined types of asbestos in that its fibers are serpentine, or curly in nature.
Finally, the third prefixes such as potassic, titano, chloro, and ferri are used to indicate richness in particular elements of amphiboles burke and leake, 2005. Amphibole definition of amphibole by merriamwebster. Members of the amphibole family include glaucophane, hornblende, riebeckite, tremolite, anthophyllite and cummingtonite. The rather complex possibilities of formulas does lead to a lot of variety in the amphibole group. Pdf calculating amphibole formula from electron microprobe. Malignant mesothelioma and its nonasbestos causes our study provides a reference for the comparison of amphibole lattice parameters, but its fingerprint has every mineral, besides lattice parameters also the. An excel spreadsheet to classify chemical analyses of. Introduction amphiboles are double chain silicates sharing. These functions work like any other function in ms excel and all use arrays parameters.
Pdf naar excel online omvormen gratis en makkelijk te gebruiken. Several varieties of asbestos are fibrous forms of amphiboles. However, 1 some amphiboles were originally described as the ferro and. Excel spreadsheets for calculating mineral formulas for specific minerals are collected here. Locockn department of earth and atmospheric sciences, university of alberta, 126 earth sciences building, edmonton, alberta, canada t6g 2e3. Since 1997, several new amphibole root names have been approved by ima, including various lirich amphiboles, some of which e. Request pdf an excel spreadsheet to classify chemical analyses of amphiboles following the ima 2012 recommendations a microsoft excel spreadsheet has.
Excel spreadsheet to classify chemical analyses of amphiboles andrewlocockamphibole. Amphibole article about amphibole by the free dictionary. French, from late latin amphibolus, ambiguous, from greek amphibolos, doubtful, from amphiballein, to throw on either. Mineral formulae recalculation teaching phase equilibria. Mineral formulae recalculation serc, carleton college. They occur in many metamorphic rocks, especially those derived from mafic igneous rocks those containing darkcoloured ferromagnesian minerals and siliceous.