 | | Journal (article/letter/editorial) | | Magnetic Behavior of Yellow to Red Xuanhua-Type Agate and Its Indication to the Forming Condition Danyi...Ministry of Natural Resources, Beijing 100013, China; zhoudy@ngtc.com.cn State Key Laboratory of Geological...Processes and Mineral Resource, China University of Geosciences, Beijing 100083, China State Key Laboratory of...Geophysics, Chinese Academy of Sciences, Beijing 100029, China; liusuzhen@scichina.org (S.L.); onlywbl@126.com...environment. However, the magnetic behavior in agate has been rarely investigated. In this study, the |  | Zhang, Xuemei, Ji, Lei, He, Xuemei (2020) Gemological Characteristics and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray Diffraction, and Raman Spectroscopic Study. Minerals, 10 (5) 401 doi:10.3390/min10050401 | Journal (article/letter/editorial) | | and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray...* School of Gemology, China University of Geosciences, Beijing 100083, China; xmzhang@cugb.edu.cn State...and Mineral Resources, China University of Geosciences, Beijing 100083, China; lji@cugb.edu.cn Correspondence:... Abstract: The Zhanguohong agate from Beipiao (Liaoning province, China), which occurs in the intermediate–felsic...in order to deduce the origin of the Zhanguohong agate. According to the microscopic observations, sandwich-like |  | | Book | | Yuanming Pan Mineralogy, Geochemistry and Genesis of Agate—A Review Reprinted from: Minerals 2020, 10, 1037.... . . . . 5 Terry Moxon and Galina Palyanova Agate Genesis: A Continuing Enigma Reprinted from: Minerals...and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray...source of the silica required for the growth of agate remains largely unknown. The first known descriptive...exists today. The complex, multi-step process of agate formation is not yet completely understood. The |  | | Journal (issue) | | Bastnasite-(Ce) Ce(CO) F Hydrozincite Zn 5(C0 3)z(OH)~ Calcite CaC0 3 Malachite Cu 2 (CO,)(OH )2 +++...+++ Rosasite (Cu.Zn),(CO;)(OH)2 + Cerussite PbC0 3 +++ Carbonates + ++ +++ Carbonate-sulfates...Carbonate-sulfates Caledonite Pb 5Cu,(S0,h(CO,)(OH)t ++ Leadhillite Pb.(CO,),(SO.)(OH) 2 ++ Anglesite PbSO, +++...is (wt.%; the CO 2 and H 2 O contents are calculated by stoichiometry): CuO 69.40, CO 2 25.45 , Hp 5...It corresponds to the empirical formula Cu 3_01 (CO 3>i(OH) 2 calculated on the basis of8 0 atoms. The |  | | Journal (article/letter/editorial) | | JAMIESON BOG— QUE AGATE FROM EASTERN OREGON 201 East By P A U L L . B R O U G H T O N Dewdney Avenue...Bogwood Agate deposit, north of Vale and Nyssa in eastern Oregon. The Jamieson Bog is a unique agate, so...in the past geological time, the present day agate deposit area was a thriving bog filled with swampy forest...Geological processes have formed solid massive chunks of agate, usually of ir regular, blocky mass, which completely...easiJy dug up. It is likely that the Jamie son Agate deposit went through a similar sequence, but with a |  | | Book | | Care of specimens; Mining THE FOSSICKING FIELDS; AGATE FIELDS — 15 15 Central Highlands; East Coast;...inland areas; North West; Southern; West Coast; Lace agate; Rhodonite and serpentine; Travertine; Spongolite...prevented from a short term fossick on any Crown Land deposit. To date there does not appear to be a plan to...grouping the fields under the following headings: (1) agate fields, (2) mineral specimen fields, (3) gem fields...one group of items. The "agate field" classifications cover not only agate but all items in the cryptocrystalline |  | | Report (volume) | | _____________________________________ Friday agate deposit. References cited__ _ _. Page Dl 2 3 3 4 5...ash flow of the John Day Formation at the Friday agate deposit___________________________________ D2 7...strata appear to be undeformed. At the Friday agate deposit, chalcedony-filled spherulites (thunder-eggs)...investigation. Specimens and information of the Friday agate deposit, supplied by Lynn A. Peck of Seattle Heights...ash flow that is well exposed at the Priday agate deposit south of Pony Butte, The tuff and lapilli tuff |  | Pršek, Jaroslav, Dumańska-Słowik, Magdalena, Powolny, Tomasz, Natkaniec-Nowak, Lucyna, Toboła, Tomasz, Zych, Damian, Skrepnicka, Dominika (2020) Agates from Western Atlas (Morocco)—Constraints from Mineralogical and Microtextural Characteristics. Minerals, 10 (2) 198 doi:10.3390/min10020198 | Journal (article/letter/editorial) | | 22 February 2020 Abstract: Agate samples collected from the vicinity of Asni and...papers, there are still some problems concerning agate nomenclature, classification, and formation, which...completely solved. From a textural point of view, agate represents a banded chalcedony, which incorporates...mineralogical/petrographical approach assumes that agate can be considered as a rock that consists mainly...topic of controversy [11]. The first note about agate occurrences in the vicinity of the Medina oasis |  | | Journal (article/letter/editorial) | | without hottom, with a keel of about 12 40 An Agate Forest In Arizona. When Geronimo led the frontiersmen...cation of heat, it presents an important lucent agate, held in for . m by the petri fied bark, every...boiler. Three inch steam The largest block of agate then known was but thir pipe is adopted for this...whole is Some specimens were sent to Tiffany & Co, and the representatives of the dazed and dazzled...to Copper. in the endeavor to saw across these agate logs five table Plu1Dbers may find this formula |  | | Journal (article/letter/editorial) | | without hottom, with a keel of about 12 40 An Agate Forest In Arizona. When Geronimo led the frontiersmen...cation of heat, it presents an important lucent agate, held in for . m by the petri fied bark, every...boiler. Three inch steam The largest block of agate then known was but thir pipe is adopted for this...whole is Some specimens were sent to Tiffany & Co, and the representatives of the dazed and dazzled...to Copper. in the endeavor to saw across these agate logs five table Plu1Dbers may find this formula |  | | Journal (article/letter/editorial) | | without hottom, with a keel of about 12 40 An Agate Forest In Arizona. When Geronimo led the frontiersmen...cation of heat, it presents an important lucent agate, held in for . m by the petri fied bark, every...boiler. Three inch steam The largest block of agate then known was but thir pipe is adopted for this...whole is Some specimens were sent to Tiffany & Co, and the representatives of the dazed and dazzled...to Copper. in the endeavor to saw across these agate logs five table Plu1Dbers may find this formula |  | | Journal (issue) | | EARTH’S TREASURES • MINERALS AND JEWELRY THE 2016 AGATE EXPO A Silica Extravaganza! R&G KIDS Stromatolite...FeaTures Virtually every form of agate will be represented at the 2016 Agate Expo in Cedarburg, Wisconsin...Wisconsin, including Laguna agate from Mexico. This specimen exhibits eye-catching shades of red, pink and yellow...by Bob Jones The 2016 Agate Expo ................................. 26 an agate lover’s dream FIelD TrIP...Editor Rockhound Dog While I collected beach agate, jasper, and petrified wood in Newport Beach, Oregon |  | | Journal (issue) | | THUNDEREGG*: OREGON'S STATE ROCK The thunder egg, an agate-filled nodule characteristic of certain parts of...salmon). Senator Glen M. Stadler, Lane County, who co-sponsored the resolution with Rep. Gerald Detering...Committee, after getting a number of signatures, and the co-sponsorship of State Representative Gerald Detering...is described as a "remarkable and colorful 13 agate-filled spherical mass of silicified claystone, and...of much lightning and thunder and therefore the agate-filled 21 nodules became known as "thundereggs"; |  | | Book | | Images Front cover top Agate from Germany: bottom Agate from Scotland. Back cover Agate from Germany. Title...Title page Agate from Russian Arctic coast. Distribution NBN International Estover Road Devon PL6 ?PY UK...Introduction 4 Names of agates 6 What is an agate? 10 Properties of agates 44 Sources of agates...geological environments. Si nce the mid-1900s, agate collecting has become very popular in Europe, North...America and the M iddle East. There are thousands of agate-producing areas on Earth, and in the following pages |  | | Journal (article/letter/editorial) | | 4,000 tons of· timber. 40 The condition An Agate Forest In Arizona. ship rigged, with four masts...cation of heat, it presents an important lucent agate, held in for . m by the petri fied bark, every...boiler. Three inch steam The largest block of agate then known was but thir pipe is adopted for this...whole is Some specimens were sent to Tiffany & Co, and the representatives of the dazed and dazzled...spend $5,000 in the endeavor to saw across these agate logs five table Plu1Dbers may find this formula |  | | Journal (article/letter/editorial) | | of their metallogenic specialization. Keywords: agate; Avacha Bay; Kamchatka; Russia; copper; SEM; EPMA;...mineralogy of agate nodules in basalts has been studied and summarized in many papers [1–19]. Agate is a banded...Some common secondary minerals can be found in agate. Oxides of iron add color, but calcite would be...found as an outer coating but can be found in the agate from basic igneous hosts. Nevertheless, copper and...cuprite, and zincite are found in the Ayaguz agate deposit (East Kazakhstan) [18]. Here, native copper |  | | Journal (issue) | | FIELD TRIPS: New Mexico Orbicular Granite Purple Agate from Arizona • COLLECTING FOSSILS in Florida • PROJECT:...MINERALS AND JEWELRY Laguna agate from Mexico is just one of the many types of agate that will be represented...represented at the 2016 Agate Expo in Cedarburg, Wisconsin. The silica gem is a rockhound favorite. (Steve Wheeler...without notice. Field trip: Mulligan Peak Purple Agate ..................................................The 2016 Agate Expo ............................................................... 84 An agate lover’s |  | | Journal (issue) | | ....................411 GRAPHITE MINE IN CHESTER Co., PA. By C. A . T hon1as ..........................key ..................................429 JEFFERS AGATE FIELD IN NEW MEXICO. By Lottie M. Neely ..........appearance, and erial, instead of a lining of "agate' • and may easily be mistaken for beach bould- a...same areas. Geodes can terrupted banding of the agate lining, be distinguished from boulders, in most...instances incomplete, so that the posed of agate, or of mixed agate and a 414 R OCKS AND MlN E th di |  | | Journal (article/letter/editorial) | | role in formation of bentonites in the Sarigyukh deposit, Armenian SSR M.A. Rateyev a a b , B.P. Gradusov...role in formation of bentonites in the Sarigyukh deposit, Armenian SSR, International Geology Review, 17:5...role in formation of bentonites in the Sarigyukh deposit, Armenian SSR Downloaded by [York University Libraries]...emphasized by all authors who have studied the deposit (Merabishvili et a l . , 1954; Dzo tsenidze, 1965;...bentonitic clays and the hydrothermal de posits of agate and manganese. and M.N. Ilinskaya They are underlain |  | | Journal (issue) | | com/writers-guidelines/ for instructions. —Editor Agate Lamp Variations Kevin Kelley, of Peakskill, New...Brazilian agate slabs. Some were fortified and some had lovely tree-scape inclusions. Any agate—Mexican... lapidary of the month JULY 2015 I had this rough agate rock that I had bought at a rock show lying around...the hardest part. The natural arrangement of the agate colorations lent themselves perfectly to the wings...get two complete butterflies from this beautiful agate, leaving only one scrap piece of rock left. —Tony | | | Journal (issue) | | com/writers-guidelines/ for instructions. —Editor Agate Lamp Variations Kevin Kelley, of Peakskill, New...Brazilian agate slabs. Some were fortified and some had lovely tree-scape inclusions. Any agate—Mexican... lapidary of the month JULY 2015 I had this rough agate rock that I had bought at a rock show lying around...the hardest part. The natural arrangement of the agate colorations lent themselves perfectly to the wings...get two complete butterflies from this beautiful agate, leaving only one scrap piece of rock left. —Tony |  | | Book (edition) | | Chrysocolla, Turquoise LJ Emerald, Beryl ^"^ Agate ** Jade Amethyst nq -* % Gem Hunter's...color, as in emeralds; their pattern, as in moss agate; or their play of eral color, as in opals. Fashion... such as agate and jasper, are described as cryptocrystal- line. For example, an agate nodule may...cat's- more but inexhaustibly various patterns of agate and jasper. So typical are their patterns that...form in the by decay or destruction of the wood. Agate and opal of gem quality formed in these ways are |  | | Journal (issue) | | Vol. 47, No. 8 • August 2017 16 THE NEW CARVER AGATE FIELD Does the material match the hype? 10 By... 28 By Rick Olmstead 38 50 MANAKARRA GRAPE AGATE New botryoidal material from Indonesia. 38 By...wonderful article with them! —Joan Kinsley Las Animas, CO EDITORIAL BOB JONES Senior Consulting Editor LYNN... www.rockngem.com Rock & Gem 9 The Carver Agate Field Does the Material Match the Hype? This...brown tubes captured in transparent, blue-green agate matrix. Story and Photos by John L. Carver I |  | | Journal (issue) | | cavated from Canyon Dlablo area ► EDMUND SCIENTIFIC CO. of Arlwna . America ·• world & .114.15 Ppd, oril'es...you r Printed Business letterhead. CRESTMARK MFG. CO., INC. Factory Address: 17-25 Camden St. Paterson...Multnomah Exposition Center, Portland, Oregon. Or1gon Agate and Mineral Society, host. Norman Nicholson, 514...Washington Agate and M ineral Socl1ty. Show, In conjunction w. Thurston Co. Fair. Com• mercial Bldg., Co. Fairgrounds...Annual Show; "Belvidere Gem and Mineral Fair." Boone Co. Fairgrounds, 1 ml. n. on Rt. 76, Belvidere, II |  | | Book (edition) | | CANYON KERN COUNTY DRY LAIDEPOSIT WILDROSE CANYON . . . . . BROWN MOUNTAIN LOCALITY...Calilornia region where ther e are actually about 20,000 co llectors. In the upper Wildcat formation there is...interested in fossils, a.Ithough quite dull to the agate collector. San Mateo County California Towards...a little of it is gem quality. Some indifferent agate has been obtained and it is hoped that another trip...grade. The second and third hills over contain more agate than does the one adjacent to the road. It is a |
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