搜索结果: 16-30 共查到“知识库 理学 mineralogy”相关记录77条 . 查询时间(0.093 秒)
Kaolin Deposits and Occurrences in Africa: Geology, Mineralogy and Utilization
Kaolin Deposits and Occurrences in Africa: Geology, Mineralogy and Utilization
2012/3/14
Kaolin Deposits and Occurrences in Africa: Geology, Mineralogy and Utilization.
Geochemistry and mineralogy of Paleocene-Eocene Oum El Khecheb phosphorites (Gafsa-Metlaoui Basin) Tunisia
phosphorites carbonate-fluorapatite REE trace elements Tunisia
2017/8/9
Upper Paleocene to Lower Eocene phosphates of the Jebel Oum El Khecheb profile (Gafsa-Metlaoui Basin GMB, Tunisia) are mostly composed of brown phospharenites lithified or not, granular, with pellets,...
Physico-chemical characteristics and clay mineralogy composition of selected soils in arid and semiarid regions of Iran
Physico-chemical characteristics clay mineralogy composition Iran
2011/11/10
Knowledge of soil types and their properties is highly important in determining constraints and potential as well as better utilization of soils. Clay minerals are important fractions of the soil soli...
Evaporite mineralogy and major element geochemistry as tools for palaeoclimatic investigations in arid regions: A synthesis
Tropical deserts evaporite minerals geochemistry synthesis
2011/11/11
This paper presents a synthesis of the applications of evaporite mineralogy and the relationship between major elements for the
palaeoclimatological research of arid regions, with examples from Playa...
Relationship Between Soil Potassium Forms and Mineralogy in Highly Calcareous Soils of Southern Iran
Arid Illite Calcium carbonate Exchangeable K HNO -extractable K
2011/11/11
Thirty seven soil samples collected from arid and semiarid regions of southern Iran were studied to determine the different forms of potassium and their relation with clay mineralogy and other soil pr...
Geochemistry and Mineralogy of the Skarns in the Çelebi District, Kırıkkale, Turkey
Ç elebi (Kı rı kkale) Skarn Zones Magnetite Geochemistry of Skarns
2009/7/8
The Çelebi district is well known for its polymetallic Fe-W and Cu vein ores. These ores are hosted by calcic skarn zones, which are broadly classified as \"intrusive around skarn\" type. Both...
Mineralogy and Geochemistry of Melilite Leucitites, Balçıkhisar, Afyon (Turkey)
leucite melilite leucicite ultrapotassic Afyon volcanic region west-central Anatolia
2009/7/8
The Middle Miocene Afyon volcanic complex crops out in west-central Anatolia and comprises products of extensive potassic-ultrapotassic volcanic activity that intrude and/or cover the sedimentary for...
Calcretized Ferricretes Around the Jaisalmer Area, Thar Desert, India: Their Chemistry, Mineralogy, Micromorphology and Genesis
ferricrete calcrete micromorphology inversion of relief Thar Desert
2009/7/7
Ferricrete, an iron duricrust, caps Tertiary and Mesozoic rocks around Jaisalmer in the Indian desert. These ferricretes are associated with two distinct present-day landforms. The upper unit is a hi...
Alteration Mineralogy and Geochemistry of the Hydrothermally Altered Rocks of the Kutlular (Sürmene) Massive Sulfide Deposit, NE Turkey
hydrothermal alteration clay minerals massive sulfide deposit eastern Pontides Turkey
2009/7/7
Volcanogenic massive sulfide deposits accompanying the Upper Cretaceous felsic rocks in the intra-arc rift zone of the Pontide palaeo-arc are common in the NE Turkey. One of them, the Kutlular (Sürme...
The mineralogy and chemistry of fine-grained sediments, Morphou Bay, Cyprus
smectite illite chlorite kaolinite calcite sediments
2009/3/17
The mineralogy and chemistry of the less than 20μm fraction of marine sediments at Morphou Bay, north-west Cyprus, are presented to characterise fine-grained sediment supplies from basic and ultrabasi...
Mineralogy of Southern Africa medicinal and cosmetic clays and their effects on the growth of selected test microorganisms
Mineralogy Southern Africa medicinal cosmetic clays their effects growth selected test microorganisms
2012/3/14
Mineralogy of Southern Africa medicinal and cosmetic clays and their effects on the growth of selected test microorganisms.
Alteration Mineralogy and Geochemistry of the Hydrothermally Altered Rocks of the Kutlular (Sürmene) Massive Sulfide Deposit,NE Turkey
hydrothermal alteration clay minerals massive sulfide deposit eastern Pontides Turkey
2010/1/11
Volcanogenic massive sulfide deposits accompanying the Upper Cretaceous felsic rocks in the intra-arc rift zone of the Pontide palaeo-arc are common in the NE Turkey. One of them, the Kutlular (Sürmen...
OLIGOCENE CLAY MINERALOGY OF THE LINXIA BASIN:EVIDENCE OF PALEOCLIMATIC EVOLUTION SUBSEQUENT TO THE INITIAL-STAGE UPLIFT OF THE TIBETAN PLATEAU
China Clay Minerals Linxia Basin Oligocene Palygorskite Tibetan Plateau Uplift
2011/11/11
The clay mineral content of the Oligocene sediments in the Linxia basin has been investigated using X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscop...
Late Maastrichtian and K/T paleoenvironment of the eastern Tethys (Israel):mineralogy, trace and platinum group elements, biostratigraphy and faunal turnovers
Cretaceous-Tertiary Boundary Israel Iridium Impact Volcanism Paleoclimate and sea-level fluctuations
2011/11/8
The late Maastrichtian to early Danian at Mishor Rotem, Israel, was examined based on geochemistry, bulk rock and clay mineralogies, biostratigraphy and lithology. This section contains four red clay ...
Animal-sediment interactions:the effect of ingestion and excretion by worms on mineralogy
Animal-sediment interactions ingestion excretion worms mineralogy
2010/1/7
By controlled experiments that simulate marine depositional environments, it is shown that accelerated weathering and clay mineral authigenesis occur during the combined process of ingestion, digestio...