William B Simmons

University of New Orleans | UNO · Department of Earth and Environmental Sciences

This was presented at two conferences in the technicals of both. 1- 2023 Rochester Mineralogical Symposium 2- 2023 New England Mineral Associations Conference Missing a live talk by Al Falster and q&a sessions from both conferences.

Deformation, metamorphism, fluid flow and pegmatite emplacement history of the post-1630 Ma Waterloo Quartzite of southern Wisconsin The Waterloo Quartzite, one of the upper Paleoproterozoic 'Baraboo Interval' quartzites of the southern Great Lakes region (Figure 1) (Medaris et al., 2003), experienced a more complex structural history and higher-gr...

The Waterloo Quartzite, one of the upper Paleoproterozoic 'Baraboo Interval' quartzites of the southern Great Lakes region (Medaris et al., 2003), experienced a more complex structural history and higher-grade metamorphism (amphibolite facies) than any of the other quartzite units in this group. It is also distinctive in being intruded by bodies of...

The pollucite structure is considered as a candidate ceramic crystalline matrix for the ceramic immobilization and long-term storage of 135Cs and 137Cs fission products, and thus, their structural characteristics have particular importance. However, its local structure has not been fully resolved from reciprocal-space techniques and infrared spectr...

The formation of primary and secondary minerals in the Emmons Pegmatite, Oxford Co. Maine.

The current classification of granitic pegmatites, originally introduced by Černý (1991a), has been the accepted system for grouping pegmatites of diverse mineralogy and chemistry for nearly three decades. Despite its general acceptance, several issues have been highlighted (Müller et al. 2022) which have imposed some limitations on its use and the...

This study represents the precursor and complementary study for the new classification of granitic pegmatites by Wise et al. (this issue) and provides a detailed analysis of existing classifications of granitic pegmatites in terms of applied classification criteria and applicability. The analyses revealed that a new classification scheme for granit...

Caffeine and theobromine are members of the xanthine family. Coffee and soft drinks contain caffeine, whereas, in cacao, theobromine is the main ingredient. The mineral contents of the tooth which sucked the caffeine-containing dam’s milk were decreased. To determine if caffeine would affect enamel, dams were fed with a caffeine and pups were kille...

Quartz from 254 pegmatites representing eight pegmatite fields and provinces worldwide was investigated by laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) to determine concentrations of trace elements Al, Ti, Li, Ge, B, Be, Rb, Na, K, Ca, P, Ga, Sb, Zn and U. A total of 281 new analyses combined with 524 published LA-ICP-MS...

Quartz from 254 pegmatites representing eight pegmatite fields and provinces worldwide was investigated by laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) to determine concentrations of trace elements Al, Ti, Li, Ge, B, Be, Rb, Na, K, Ca, P, Ga, Sb, Zn and U. A total of 271 new analyses combined with 535 published LA-ICP-MS...

Almandine-spessartine garnets, from the Oxford County pegmatites and the Palermo No. 1 pegmatite, record significant compositional variations according to the degree of evolution of their hosting rock. Garnets from the most fractionated pegmatites (Mt. Mica, Berry-Havey, and Emmons) show the highest Mn, Nb, Ta, Zr, and Hf values, followed by those...

Correianevesite, Fe2+Mn2+ 2(PO4)2·3H2O, is an uncommon secondary phosphate in granitic pegmatites. Described for the first time from the Cigana pegmatite (Conselheiro Pena, Brazil), it was subsequently reported only at the Berry-Havey pegmatite (Androscoggin County, Maine, U.S.A.). A single crystal from a new occurrence at the Emmons pegmatite, Oxf...

Primary FeMn phosphates from four pegmatites (Cañada, Palermo#1, Palermo#2 and Palermo#11) typical of the beryl-columbite-phosphate subtype have been characterized texturally and geochemically. Most of the common FeMn phosphates (triphylite, sarcopside, ferrisicklerite, wagnerite and wolfeite) are extremely poor in trace elements, with the exceptio...

A new spodumene-rich pegmatite was recently discovered on the north side of Plumbago Mountain, Oxford County, Western Maine. The site is about 1.5 km northwest of the famous Dunton gem tourmaline pegmatite. It is an albite-quartz-spodumene pegmatite containing gigantic crystals of spodumene and montebrasite. Some spodumene crystals are more than 11...

This study represents the precursor and complementary study for the new classification of granitic pegmatites by Wise et al. (this issue) and provides a detailed analysis of existing classifications of granitic pegmatites in terms of applied classification criteria and applicability. The analyses revealed that a new classification scheme for granit...

The early Cretaceous anorogenic, sub-volcanic Erongo Granite, Namibia, was emplaced into metasedimentary rocks of the Neoproterozoic to Cambrian Damaran Orogeny. The Erongo Granite contains pegmatitic miaroles containing abundant beryllium and boron mineralization and segregations of rounded quartz-Tourmaline orbicules (tourmaline nests). This stud...

Tantalowodginite is a new mineral found in the Emmons granite pegmatite dike in Oxford County, Maine, U.S.A. It occurs as anhedral masses (0.5-12 cm) in the pegmatite core composed of K-feldspar, quartz, almandine, and schorl. Rarely, it occurs as crystals (0.2-1 cm) in miarolitic cavities associated with muscovite and fluorapatite. Tantalowodginit...

Fractal and two-point radial autocorrelation analysis has been performed on 16 images of experimental products and 44 images of natural graphic K-feldspar-quartz textures from several pegmatite localities. The box-counting fractal dimension and the lacunarity of experimental and many natural images overlap, although natural samples from one of the...

New mineral description

Geology, Mineralogy, Geochemistry and Timing of Mt Mica and Havey Pegmatites, Oxford County, Maine, USA

The Stettin Complex is the oldest (1565±3-5 Ma, Van Wyck, 1994) and most alkalic of the four intrusions that comprise the Wausau Syenite Complex (Fig. 1), and is primarily composed of amphibole-and pyroxene-syenite , tabular syenite (a mappable unit, essentially only feldspar-bearing) and nepheline syenites, and syenite aplite. Recent roadwork alon...

The Emmons pegmatite is a large, peraluminous, LCT-type pegmatite exposed on Uncle Tom Mountain, Greenwood, Oxford County, ME. This gently dipping, 300 Ma dike intrudes Paleozoic metapelite and metacarbonate rocks. The pegmatite is complexly zoned with a wall zone comprised of K-feldspar, quartz, almandine and schorl, which locally exhibit a comb s...

The Havey pegmatite in Poland, Androscoggin Co., Maine, is part of the Oxford county pegmatite field which occurs in the Sebago migmatite terrain. The Havey pegmatite is an evolved Li-B-rich pegmatite mined mainly for gem tourmaline and occasional pocket beryl as well as for mineral specimens. As is common to many Oxford County pegmatites, the Have...

Pegmatites of the South Platte district, Jefferson County, Colorado, constitute one of the world's classic NYF pegmatite districts. The district is located within the Precambrian core of the Rocky Mountain Front Range in central Colorado, near the northern margin of the Pikes Peak batholith. More than 75 pegmatites belong to this district and all a...

Pseudobrookite has been found in vuggy episyenite surrounding a thin vein in granite of the Nine Mile pluton, the youngest and most silicic of four plutons comprising the Wausau Complex. The pseudobrookite occurs as black to dark grey prismatic crystals up to approximately 1.5 mm in length, clustered in radiating sheaves or as single crystals. Elec...

The garnet line is a planar fabric occurring within the footwall wall zone just beneath the core zone in many of the western Maine pegmatites. This study focuses on the mineralogical, textural, and chemical characteristics of the garnet line within the Mt. Mica pegmatite, Oxford Co., Maine and a similar, but less pronounced, garnet line feature at...

The Mt. Mica pegmatite is famous for producing gem tourmaline for nearly 200 years. The dike, ranging in thickness from 1 to 8 m and dipping 208 SE, has a simple zonal structure consisting of a wall zone and core zone. The wall zone is essentially devoid of K-feldspar. The outer portion of the pegmatite consists of quartz, muscovite, albite (An 1.8...

Bjarebyite, BaMn2+ 2Al2(PO4)3(OH)3, is a rare secondary phosphate mineral in granitic pegmatites. From the crystallographic point of view it is exhaustively described in the monoclinic unit cell with a 9.0671(2) A° , b 12.1500(4) A° , c 4.9403(1) A°, β 100.399(2)8, V 535.31(2) A°3, and space group P21/m. Single crystal X-ray diffraction data were c...

Two Proterozoic REE-rich pegmatites districts occur in the Front range and Mosquito range in Colorado. They are the 1.0 Ga South Platte district and the 1.6 Ga Trout Creek Pass districts. The extreme enrichment of HREE in minerals such as polycrase-(Y), euxenite-(Y), samarskite-(Y) and xenotime-(Y), the LREE enrichment in monazite-(Ce), allanite-(C...