A pisolite is a sedimentary rock made of pisoids, which are concretionary grains – typically of calcium carbonate which resemble ooids, but are more than 2 ...Bauxite is an aluminium-rich ore used for the manufacture of aluminium (metallurgical bauxite) and refractory products, chemicals or cements. Bauxite is a prime important raw material for the primary aluminium industry. It is also used in a number of non-metallurgical sectors, like refractory, abrasive, cement, steel making and chemicals.Isolated crystals, short to long prismatic along [010], also acicular with chisel like terminations, dipyramidal thick tabular with forms {001}, {110} and {010}, to 30cm; as columnar crystal aggregates and crusts, globular, reniform, pisolitic, coralloidal, stalactitic, internally fibrous, or bandedPisolitic ferricrete forms in the resorted earth, vesicular ferricrete forms in the saprolite (Ollier, 1959). 3.2. Assumption of vertical movementA major cause of confusion in 'laterite' studies has been the overemphasis on the view that 'laterites' have formed by movement of iron up or down the profile. This traditional model invokes ...Pisolitic ironstone. The five main types of iron ore forming minerals are: Hematite (70% Fe) Magnetite (72% Fe) Goethite (63% Fe) Limonite (up to 60% Fe) Siderite (48.2% Fe) An ore’s quality is also impacted by the commercially worthless material surrounding it, collectively known as gangue. Silica and phosphorus-yielding compounds are ... The relationship between a flow behavior of fluid during sintering process, and the pore structure and agglomeration degree of the sinter cake with the change of pisolitic ore ratio were investigated.pisolitic See PISOLITH. Source for information on pisolitic: A Dictionary of Earth Sciences dictionary.Pisolitic ferricretes are cemented accumulations of pisoliths which are formed as clastic components from the materials where they formed by deposition of lamina of various compositions (goethite , kaolin, gibbsite , haematite , and magnetite with quartz grains). Nodular ferricrete contains nodules of earthy appearance that are smaller than ...E, Pisolitic rudstone is a prominent facies only locally in the Ojo Huelos Member. The pisolite consists of concentrically layered pisoids in sandy, calcite matrix.This succession is composed mainly of sandstones (sometimes with pebbles), siltstones, and kaolinitic claystones. The ironstones are classified according to their lithology and texture into two types: massive and pisolitic–oolitic ironstones. The later is restricted to the southern rim of Ga’ara Depression.The pisolitic (or so-called "algal") limestone characteristically occurs as a discontinuous zone of white to pink, large nodules of hard dense limestone (Pl. 1A). The zone is about 1 foot thick or less and is the topmost layer of the calcareous upper part of the Kimball Member.Definition. The least median of squares (LMS) is a regression method introduced in Rousseeuw ( 1984) and further developed in Rousseeuw and Leroy ( 1987 ). The LMS estimator minimizes the median of the squared residuals. The method is shown to be highly robust having a breakdown point of 50% which is the highest possible.Pisolitic Iron Ore, Ironstone is suitable for Oil, Acrylics, Tempera, Watercolor / Gouache, Lime / Fresco, Silicate binder, Waterglass ...It is marked by concentric wavy laminae and pisolitic structures generally showing an alternation of pinkish-tan and gray colors; it contains grains of quartz and feldspar and locally granitic and other igneous pebbles; its upper surface is generally pitted and uneven where exposed; and Elias (1931) has described the fossil alga Chlorellopsis ...物理与光学性质. 勃姆石属于 正交晶系 中的双锥点群。. 本身为白色晶体，由于其中含有的杂质，使得常有黄色、绿色、棕色或红色斑点，带有玻璃或珍珠光泽，摩氏硬度为3到3.5，比重为3到3.07。. 勃姆石为 正双轴晶体 ， 折射率 为nα = 1.644 - 1.648, nβ = 1.654 - 1.657 ...Pisolite stone from magnetite and hematite ore. Photo about metallic, mineral, little, haematite, gemmology, object, magnetic, geology, gemmological, ...Ash grains pyroclasts with a mean diameter of less than 2 mm They may be further divided into coarse ash grains (2 mm to 1/16 mm) and fine ash (or dust) grains (less than 1/16 mm). Pyroclastic deposits are defined as an assemblage of pyroclasts which may be unconsolidated or consolidated. They must contain more than 75% by volume of pyroclasts ...pisolitic orthoquartzite-clay-Mn oxide association that includes the giant deposits of Nikopol in Ukraine and Chiatura in Georgia. Paleoproterozoic Mn deposits are mined at Woodie Woodie in the Hamersley Basin and from Bootu Creek in the Tomkinson Creek Province near Tennant Creek. Australia is the premier bauxite producer globally, with ...Pisolites and Oncoids. Pisolites, oncoids, and oncolites are enveloped by irregular layers. All these grains are frequently larger than ooids and commonly are over a centimeter in diameter. Pisolites form by the precipitation of calcium Carbonate around nuclei trapped in sediment within the vadose zone of soils or marine tidal flats (Figure 24). larger blocks or crusts. In East Africa pisolitic fer-ricrete is called murram, and widely used in road-building. In Fiji pisolitic or indurated material is largely absent, but many red soils are described as laterite. In South Australia a profile with mot-tled and pallid zones was regarded as ‘lateritic’Nằm trong nhóm các loại bệnh phổi do nhiễm bụi, bệnh bụi phổi silic vô cùng nguy hiểm khi những hạt bụi silic tích tụ sâu trong phổi lâu ngày gây tổn thương hệ hô hấp. Vì thế, những ai làm việc trong môi trường chứa bụi silic cần hiểu rõ về nguyên nhân, triệu chứng, cách phòng ngừa để tránh bị bệnh bụi ...Photograph of at least 3.5 billion year old banded-iron formation showing intensive deformation as a result of gravitational overturn until 3.41 billion years ago. Daniel Wiemer, Author provided ...pisolitic ferruginous duricrusts and ferricrete in the cover as potential sample media to vector towards buried mineral deposits in the weath- ered and covered terrains; and III) use of interface ...Laterite caps and pisolitic material (gravel, ironstone and quartz) being shed from active mining area or dolerite areas. Historical Evidence. Signs of previous activity by prospectors such as; Old Prospector camps and rubbish heaps; Old Gold Mining and Ghost Towns; Dry Blowing areas;1. pismire - social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers. ant, emmet. hymenopter, hymenopteran, hymenopteron, hymenopterous insect - insects having two pairs of membranous wings and an ovipositor specialized for stinging or ...Care and maintenance. For more information go to Nathan River Resources Pty Ltd. Remaining JORC resources 279 Mt @ 41.5% Fe inc 28 Mt DSO @ 59.4% Fe. Roper Bar is an open-cut iron ore mine located 55km southeast of Ngukurr in the Roper Group of the McArthur Basin. The mine operated briefly in 2013-15 before closing due to a low iron ore price.Ikatan kimia dari suatu kristal dapat dibagi menjadi 4 macam, yaitu: ionik, kovalen, logam dan van der Waals. Sistem Kristalografi dibagi menjadi 7 sistem, dibawah ini akan diterangkan lebih lanjut tentang 4 sistem kristal yaitu sistem reguler, sistem tetragonal, sistem triklin, dan monoklin. I.1.18.• Most of the Indian deposits are associated with laterite capping occurring as blankets on the plateau and hill ranges of the peninsular regions. However, occurrences of bauxite at lower levels are also common. •The major bauxite deposits of India occur in the central regions: •Plateau regions bordering Bihar and M.P. •Maikala range in M.P. …Ash grains pyroclasts with a mean diameter of less than 2 mm They may be further divided into coarse ash grains (2 mm to 1/16 mm) and fine ash (or dust) grains (less than 1/16 mm). Pyroclastic deposits are defined as an assemblage of pyroclasts which may be unconsolidated or consolidated. They must contain more than 75% by volume of …Hammer is 30 cm long. B. Large metoposaurid amphibian bone fragment in pisolitic rudstone. Scale = 5 cm. C. Beds of planar cross-bedded litharenite sandstone that occur between pisolitic beds. Section shown is about 2.7 m thick. D. Upper pisolitic beds are a conglomerate of pisoids, red mudstone clasts and pale gray clasts of micritic limestone.grains occurring only in the pisolitic zone, and cloudy, perfectly euhedral and zoned grains ubiquitous in the profile and clearly derived from weathering of the granodiorite. The average zirconCertified pisolitic bauxite (wet, cut surface; 11.7 cm across) from Arkansas, Photo by James St. John CC-BY-2.. Precious Rock. Bauxite is made up of an abundant mixture: hydrous aluminum oxides, aluminum hydroxides, clay minerals, and insoluble materials such as quartz, hematite, magnetite, siderite, and goethite.Lacustrine algal pisoliths are growing today in many calcareous lakes throughout the midwestern United States. Pisoliths from two Michigan lakes studied are subspherical, and consist of annual couplets of porous and dense concentric laminae surrounding a nucleus.Pedalium murex L. is a medicinal herb that has been used for the treatment of diseases related to kidney in the traditional system of medicine. The current study aims to study the effect of ethyl acetate extract of P. murex (EAEP) and its fractionated compound pedalitin against urease production and UreC gene expression in Proteus mirabilis.The selected reference strain Proteus mirabilis (MTCC ...The oolitic and pisolitic iron ore outcropping in the Ghorabi area to be syngenetic, the iron being supplied by weathering processes and the high grade ores exist in the crests and that low-grade ores are localized in the limbs of the anticlinal structures. On the other hand, El Aref and Lotfy (1985) suggested that the iron deposits were formed ...The major rock types mined for the production of metallic iron are massive hematite, pisolitic goethite/limonite, which provide a 'high-grade' ore, and banded metasedimentary ironstone, magnetite-rich metasomatite, to a much lesser degree, rocks rich in siderite, rocks rich in chamosite which provide a 'low-grade' ore. High-grade orePhysical Properties of Bauxite. Bauxite is typically a soft material with a hardness of only 1 to 3 on the Mohs scale.It is white to gray to reddish brown with a pisolitic structure, earthy luster and a low specific gravity of between 2.0 and 2.5. These properties are useful for identifying bauxite; however, they have nothing to do with bauxite's value or usefulness.the formation of «degraded» bauxites (pseudobrechic, nodular, pisolitic baux ites of Boulange 1984; Boulange and Millot 1988). During these transformations,page 462 note 1 I must point out here the logical sequence of the adoption of this term lake laterite.If one is to apply the term to pisolitic iron-ores that have been deposited by chemical precipitation from a body of water, and are, in addition, associated with bodies of typical laterite, it is difficult to avoid its extension to include those deposits …Purchase this Article for $25.00. Studies were carried out to examine the effect of introducing varying levels of a pisolitic limonite (Yandi) into an Australian iron ore blend. Compared with other ores in the blend Yandi is more porous. This structure is found to have a considerable effect on the sintering behaviour of the blends.-1-TEXTURES OF THE IGNEOUS ROCKS* Structure - large-scale features recognizable in the field, such as banding, lineation, jointing, and vesicularity. Texture - refers to degree of crystallinity, grain size, and geometrical relationships between the cons tituents of a rock (fabric). I. Igneous Textures A. Degree of Crystallinity Holocrystalline - composed wholly of crystalsThe paper reports the first ever sighting of the actual formation of pisoliths. •. A new model is presented for the origin of pisolitic iron ore deposits that gives credible …Pisolitic bauxite (4.1 centimeters across at its widest) Bauxite is an aluminum oxide/hydroxide-rich rock. It is the richest source of aluminum compared with any other common rock, and is the best aluminum ore. Bauxites are mixtures of several Al-rich minerals, including gibbsite (Al(OH)3 - aluminum hydroxide), boehmite (gamma AlO·OH - aluminum hydroxy-oxide), and diaspore (alpha AlO·OH ...Pisolitic bauxite (public display, Minnesota Discovery Center, Chisholm, Minnesota, USA) Bauxite is an aluminum oxide/hydroxide-rich rock. It is the richest source of aluminum compared with any other common rock, and is the best aluminum ore. Bauxites are mixtures of several Al-rich minerals, including gibbsite (Al(OH)3 - aluminum hydroxide), boehmite (gamma AlO·OH - aluminum hydroxy-oxide ...laporan mineralogi. Febyola Manik. BAB I PENDAHULUAN 1.1. Latar Belakang Mineralogi merupakan salah satu cabang ilmu geologi yang mempelajari mengenai mineral, baik dalam bentuk tunggal maupun dalam bentuk persenyawaan, antara lain mempelajari sifat fisik, sifat kimia, cara keterdapatan, cara terjadi dan kegunaannya.Definition. The least median of squares (LMS) is a regression method introduced in Rousseeuw ( 1984) and further developed in Rousseeuw and Leroy ( 1987 ). The LMS estimator minimizes the median of the squared residuals. The method is shown to be highly robust having a breakdown point of 50% which is the highest possible.May 18, 2022 · Calcretes and silcretes are the most widely encountered ‘rocks’ in the Kalahari sandveld that covers much of Botswana. This chapter presents the first holistic overview of current knowledge about these duricrusts at a national scale. It does so by considering the distribution, classification, macromorphology, geochemistry and mineralogy of ... Commonly used words are shown in bold.Rare words are dimmed. Click on a word above to view its definition.Apatite mineral information page at mineralminers.com: your on-line link for factual scientific data & mineralogical information about natural apatite, with links to several different types of natural apatite items as well information on apatite mining locations and background info including apatite physical properties, occurance, metaphysical uses and historical apatite information.Words that rhyme with pig include quick, sick, big, jig, pick, trick, click, kick, nick and stick. Find more rhyming words at wordhippo.com!Pisolitic iron ores (aka Channel Iron Deposits, CID) are a special case of transported pisolitic ferricrust . that form an important resource of medium grade iron ore (57 …Smoky quartz with spessartine on top of feldspar matrix, featuring different crystal habits (shapes). In mineralogy, crystal habit is the characteristic external shape of an individual crystal or aggregate of crystals. The habit of a crystal is dependent on its crystallographic form and growth conditions, which generally creates irregularities due to limited space in the crystallizing medium ...Bauxite - Handsample of textbook Bauxite ore with pisolitic texture. Bauxite is a term for a rock composed of oxides and hydroxides of Iron and Aluminium ...The pisolitic bauxite of the studied area is reddish to reddish brown in colour, consisting dominantly of pellet shaped pisolites/oolites. Similar type of pisolitic texture has been reported by Rao and Krishnamurthy in bauxite developed over Deccan basalt from Amarkantak area, Chhatisgarh, India.The pisolites are embedded within …Bijih besi maghemite, γ-Fe2O3, adalah bentuk hematit metastabil, α-Fe2O3, yang terbentuk dari magnetit melalui oksidasi progresif. Ini memiliki karakteristik magnetik yang sama dengan magnetit, sedangkan hematit bersifat magnetis lemah. Strukturnya spinel, tetapi dengan kekosongan atom besi.Laterite is frequently pisolitic (pealike). Exposed surfaces are blackish-brown to reddish and commonly have a slaggy, or scoriaceous, lavalike appearance. Commonly lighter in colour (red, yellow, and brown) where freshly broken, it is generally soft when freshly quarried but hardens on exposure.Oolitic-pisolitic ore type: Low to moderate grade ore (49-45 % Fe) has a yellow to yellowish-brown . color and oolitic to pisolitic texture. It is mainly for med of goethite, Iimonite and quartz ...Noun. 1. piss - liquid excretory product; "there was blood in his urine"; "the child had to make water". pee, piddle, urine, weewee, water. body waste, excrement, excreta, excretory product, excretion - waste matter (as urine or sweat …Cementation often creates "hardpan" or pisolitic, nodular horizons. Eolian action may introduce elements not present in the underlying soil profile, being often derived as dust from remote deserts or seacoasts. Saline components are traced to oceanic wave froth, and some iron or silica components are derived from the extra‐terrestrial ...The pisolitic bauxite is characterized by the presence of pisolitic textures. Microscopic investigation suggests two pisolite forms: (1) simple pisolites with a kaolinite core surrounded by a preserved cortex of boehmite (Figure 5E); (2) complex residual rounded fragments typical of pisolitic bauxite, so called allogenic pisolites (Figure 5D) .Laterite. Monument of laterite brickstones at Angadipuram, Kerala, India, which commemorates where laterite was first described and discussed by Buchanan-Hamilton in 1807. Laterite is a soil type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration ...minerals and in the concretionary pisolitic or wormy-textured coarse-grained goethite. Cr- spinels appear to have begun to dissolve and convert to limonite with networks of hematite grains, and grains of hematite are also found in some coarse-grained goethite. Figure 2 shows general of the chemical constitution and classification of bore holeThis paper presents procedures and technical parameters used for resource estimation of bauxite deposits including the non-consolidated pisolitic bauxite (Weipa) and the intensely lithified types (Gove, Sangaredi, Az Zabira). Bauxite resources are usually estimated by drilling and sampling drill holes at 0·25 to 0·5 m intervals.Words that rhyme with pig include quick, sick, big, jig, pick, trick, click, kick, nick and stick. Find more rhyming words at wordhippo.com!Pisolitic calcretes differ from cryptalgal oncolites in that they lack mechanical sedimentary structures and show evidence of in situ growth that may be interrupted by periods of in situ brecciation, leaching, cementation and internal sedimentation. Laminar calcretes may simulate a wide variety of cryptalgal deposits (laterally linked ...BHP is trialling renewable diesel in machinery at its Yandi iron ore mine. It's part of the company's interim measures to reduce diesel fuel carbon emissions. An environmental engineer says ...The meaning of PISOLITE is a limestone composed of pisiform concretions. Paleontologists have identified a new genus and species of algae called Protocodium sinense which predates the origin of land plants and modern animals and provides new insight into the early ...The religion that played the most significant role in promoting modern Paganism was Wicca.Coming to public attention in 1950s England, Wicca’s early practitioners believed that their religion was the survival of a pre-Christian witches’ religion, an idea later rejected by historians. Wicca soon spread abroad, and in the United States …Pisolitic bauxites display ooids and complex pisolite in the matrix (Fig. 6 C and D). Pisolitic bauxite is predominantly composed of diaspore (38–51 wt%) and chamosite (47–57 wt%), with small amounts of anatase (2–4 wt%), trace amounts of boehmite and goethite (Fig. 7 D to F; Table 2).The present work proposes a novel process to sinter porous iron ore (porosity ~23-24%) with enhanced productivity and quality. The iron ore is pre-processed in the presence of calcined lime for the temporary closure of pores, which further prevents water absorption during the granulation process in drum in the presence of water. The calcined lime coated iron ore provides surface coating on ...Bauxite is an aluminium-rich ore used for the manufacture of aluminium (metallurgical bauxite) and refractory products, chemicals or cements. Bauxite is a prime important raw material for the primary aluminium industry. It is also used in a number of non-metallurgical sectors, like refractory, abrasive, cement, steel making and chemicals.The company was founded in 1960 and is active in the field of mining all kinds of mineral reserves and the company's specialty is not only phosphate. Al-Nasr Company is active in the field of Phosphate, Talc, Quartz, Feldspare, Ilmenite, Pisolitic Kaoline, Plastic Caolin, Fermoclite, Granite Rock, Ballclay and Gypsite.Poikilitic, Ophitic, and Subophitic Texture. Poicilitic or poikilitic texture is one of the igneous rock textures. It is characterized by a few larger, poorly-formed mineral crystals, completely enclosing many smaller, well-formed, usually randomly oriented crystals of different minerals. This texture is the equivalent of poikiloblastic in ...Praktikan diwajibkan memakai pakian yang rapi selama praktikum berlangsung. 6. Praktikan dilarang makan, minum, maupun merokok didalam ruangan laboratoruim selama praktikum berlangsung. 7. Praktikan yang tidak hadir 2 kali berturut - turut akan dianggap gugur dan dipersiapkan untuk mengulang di tahun depan.CIDs are quite different from bedded ores. Their chief characteristic is their pisolitic "texture": rounded hematitic "pea-stones," 0.1-5 mm in diameter, rimmed and cemented by a goethitic matrix. The ore is brown-yellow in color. They typically contain minor amounts of clay in discrete lenses.Differences Between Real and Fake Calcite. Recommendation box: All tools and equipment you need for rockhounding and rock identification* (Amazon links): 1. Estwing Rock Hammer - Light, comfortable, and extremely durable hammer. 2. Estwing Geologist Pick - Classic and the most trusted paleo pick in the world. 3. Finder 12-Inch Chisels - Heavy-duty chisels set with hand protection.Pisolitic definition: (mineralogy) Composed of, containing, or resembling pisolite .The meaning of PISOLITE is a limestone composed of pisiform concretions.partially eroded cemented ferruginous pisolitic laterite, bauxitic in places, developed on Tertiary sediments that occurs mainly in the region of (i); (iii) earthy high-silica laterite, ferruginous but non-bauxitic, developed possi-bly in parts on Tertiary sediments, but mainly on Cretaceous and older rock types in an area east of (i)Description:- Pisolite is a sedimentary rock made of pisoids, which are concretionary grains. Pisoids are spherical, concentrically banded bodies in sediments, ...Pisolitic ironstone. The five main types of iron ore forming minerals are: Hematite (70% Fe) Magnetite (72% Fe) Goethite (63% Fe) Limonite (up to 60% Fe) Siderite (48.2% Fe) An ore’s quality is also impacted by the commercially worthless material surrounding it, collectively known as gangue. Silica and phosphorus-yielding compounds are ... Pisolite stone from magnetite and hematite ore. Photo about metallic, mineral, little, haematite, gemmology, object, magnetic, geology, gemmological, ...Rudstone is a type of carbonate rock. Rudstone with micrite. Width of picture is 36mm. Rudstone with sparite. Width of picture is 36mm. The Dunham classification (Dunham, 1962 [1]) did not consider grain size as a criterion for the description of carbonate lithologies. In an attempt to rectify this perceived deficiency, Embry & Klovan (1971 [2 ...ACTIVITY BOOK key 01.pptx. Mar Caston Palacio • 303 views. NEP Conference - 2023.pptx. LikhitPanvelkar1 • 103 views. PROFESSIONAL ROLES.pdf. JonathanCovena1 • 125 views. Monthly Information Session for HMCS Vancouver (October 2023) Esquimalt MFRC • 110 views. AN INTRODUCTION TO ORE MICROSCOPY - Download as a PDF or view online for free.Pisolitic ferricretes are cemented accumulations of pisoliths which are formed as clastic components from the materials where they formed by deposition of lamina of various compositions (goethite , kaolin, gibbsite , haematite , and magnetite with quartz grains). Nodular ferricrete contains nodules of earthy appearance that are smaller than ...Textures Pisolitic, massive, nodular, earthy. Age Range Mainly Cenozoic, one Cretaceous deposit known. Depositional Environment Surficial weathering on well ...The pisolites are hypothesised to form via concretion of hematite within arid climates, which has washed from the source banded iron formations into a river bed ...pisolitic limestone. See all media. Category: Science & Tech Related Topics: chemical rock...(Show more) pisolite, spheroidal crystalline particle larger than 2 millimetres in diameter (see oölite). This article was most recently revised and updated by ...Dec 1, 2019 · Pisolitic laterite and lateritic duricrust from Greenbushes, Western Australia, was analysed as an example, using a suite of laband field mineralogical analytics, to understand the regolith ... The results indicate that LO1 (loss on ignition) in iron ores have a positive influence on FeO formation by promoting the sintering process of Fe2 O3 decomposing and reducing. Silica contents in iron ores play a determining role in final content of FeO in sinter. The melting characteristics of iron ores significantly affect FeO formation during ...The stage IV or V Caprock calcrete here apparently formed under a stable , The pisolitic bauxite is characterized by the presence of pisolitic textures. Microscopic inves, The pisolitic and nodular layer of the duricrust typically is visible at surface on the peneplain. Alternatively it m, Ironstone (sandstone with iron oxides) from the Mississippian Breathitt Formation, Mile Marker 166, I, Larutan asam inilah yang akan Genesa mencuci unsur-unsur logam pada kondisi Eh dan pH tertentu hingga , Calcite. drusy, pisolitic, stalatitic, stalagmitic, prismatic, acicular, tabular; scalenohed, Esteban M, Pray LC (1976) Non-vadose origin of pisolitic facies, Capitan Reef Complex (Permian), Guadalupe Mountains, Ne, pisolitic, lateritic clay zones of the weathering profi, v. Oolitic & Pisolitic structure: These are examples of con, Pisolitic Reniform Reticulate Saccharoidal Stalactitic Stellated, Photomicrograph of pisolitic carbonate from the lower, pisolitic texture sh owing replacement of goethite by . gibbsite is a , The pisolitic (or so-called "algal") limestone chara, Pisolitic bauxite mainly consists of diaspore and chamosite, with sma, New ore types such as hematite/goethite ores from de, The pisolitic (or so-called "algal") limestone chara, Pisolitic Bauxite Occurrence at Menemsha Hills Reservation,, Pisolites are larger, pedogenic (soil-related) versions of .