沉积型层控矿床教材

沉积型层控矿床

全区存在沉积型层控矿床的研究区主要有卡尔卡拉林，吉尔吉斯阿拉套，楚-伊犁，卡拉套地区。全区沉积型层控矿床地质时代有晚古生代寒武系（Cam），早古生代泥盆系（D），石炭系（C），中生代侏罗系（J），白垩系（K），新生代古近系（E）。全区沉积型层控矿床矿物组合有三水铝矿, 赤铁矿, 高岭石，磁铁矿，钒云母，石英，磷灰石，硬水铝石，沥青铀矿，铀石，矾土。全区围岩蚀变类型有硅化作用，绢云母化，绿帘石化，氧化。主要矿物元素有Al，V，Fe，phosphorite。次要矿物元素有Mo, U, Ni, Zn。全区矿床规模以小型矿床为主，中、大、超大型矿床偏少。全区沉积型层控矿床类型主要有沉积型层控——铝矿床、铁矿床、磷矿床、铀矿床、钒矿床。

以下为该类矿床的详细分类。

沉积型层控铝矿床

岩石类型：。

地质时代：古生代，中生代{C1，D3，K1，T1，К2，С1-С2}

主要矿石矿物：三水铝矿, 赤铁矿, 高岭石, 菱铁矿，硬水铝石，针铁矿，铝铬铁矿

围岩蚀变：硅化

化学元素标志

主要矿物元素：Al次要矿物元素：V，Fe，Ti，P

矿床规模：小型与中型矿床

构造带：Andyghen-Kichikalay，Dekhkanabad，Emba，Farghona-Isfara-Osh，Kughitang，Mughodjar East，Muzkol，Sarez，Torgay Central，Torgay North，Torgay South，Torgay West，Urmetan，Zauralsk，Zhaman-Sarysu

构造分区：Kairaqty，Kempirsai，Northern，Southern，Stepnyak East，Tashkumyr，Troitsk，Yagnob，Zhaman-Sarysu

包含研究区域：杰孜卡兹甘，卡拉套，吉尔吉斯阿拉套，卡尔卡拉林品位吨位模型：

沉积型层控铝矿床吨位模型

沉积型层控铝矿床品位模型

ID 1733

Name Krasnooktyabrskoe

Russian name КраснооктябрьскоеCountry KAZAKHSTAN

Major Commodity Al

Deposit_Type Sedimentary stratiform

Deposit Size Large and very large Administrative

district

Qostanay Oblysy

Geological settings and rocks The deposit is located in the western flank of Turgai depression, in the Western Turgai bauxite basin. The area is composed of dislocated Lower Carboniferous rocks (limestone, andesite porphyrite, tuffite) overlined with flat sandy-clay MZ-CZ deposits. Preore Paleozoic basement was intruded with small diorite and plagiogranite-porphyry bodies. The basement surface is complicated by faults, as well as by karst and erosion-karst depressions filled with bauxite-bearing deposits varied in shape and in size. The bauxite-bearing deposits form two members, lower one composed of variegated clay and upper one, including stone, loose, aclayey bauxites.

Geological age MZ-CZ

Tectonic Zone Torgay Central Wallrock

alteration

sideritization

Orebody morphology 26 ore bodies are groupped at 2 sites, Northern (17) and Southern (9). Ores were formed through resedemintation оlaterite weathering crust tocarst depressions.

Major minerals gibbsite, hydrohematite, hematite, kaolin, siderite Minor minerals chlorite, pyrite,corundum, calcite

Grade A12O3 41.8-49.8 %; SiO2 5.2-14.0 %; Fe2O3 7.2-24.2 % Tonnage Res. Are more than 120 Mt

ID 1773

Name Klochkovskoe Russian name КлочковскоеCountry KAZAKHSTAN

Major Commodity Al???Cu Deposit_Type Sedimentary stratiform Deposit Size Medium Administrative

district

Qostanay Oblysy

Geological settings and rocks

Klochkovskoe is confined to the western contact of the South-Adaevsky intrusive massif, formed mainly by quartz porphyraceous diorites, diorite

porphyrites and

granodiorites. The inclosing rocks are represented by volcanic-sedimentary formations of the Upper Middle Vise. Residuums of an average thickness of 40

m are

developed over the infolded basement rocks; they are overlapped by sandy-clayey sediments of the Neogene-Quaternary up to 20 m thick.

Tectonic Zone Torgay Central

Wallrock alteration

All varieties of intrusive rocks have undergone significant hydrothermal alterations, expressed by silicification, sericitization and epidotization which confine the most intense sulphide

mineralization.

Orebody morphology

As a result of exploration drilling at 400x200 m grid, 74 - 94 m thick mineralization with a copper grade of 0.3 to 0.74% and gold grade of 0.1-0.2 g/t was detected. The mineralization is localized both in the intrusive rocks of the Paleozoic basement (primary ores) and in the products of their weathering (oxidized). Primary ores are traced with the holes to a depth of 226 m, oxidized – to 30 m. The mineralization in the residuum is richer than in the bed rock, according to commercial components

grade.

Окисленные руды занимают площадь равную 2800 тыс.м2, при средней мощности оруденения 31,5 м, объем

окисленных руд составляет 86 млн.м3, прогнозные ресурсы при объемной массе 2,2т/м3 –190 млн.т. ресурсы меди при среднем содержании 0,35% оцениваются в 665 тыс.т.

Первичные руды занимают несколько меньшую площадь и

выявленные скважинами 3, 6, 7, 9 –11. Мощность рудных

интервалов по скважинам, выделенных по бортовому

содержанию меди 0,1 %, варьирует от 14 до 184 м и в

среднем составляет 82,4 м.

Major minerals Gibbsite

Grade Cu - 0.1-1.28 %, av.Cu - 0.21 %.

Tonnage

Copper potential resources are estimated at 0.825 Mt, and gold resources at about 15 tons.

Площадь, приходящаяся на первичные руды,

составляет 1200 тыс. м2. При средних показателях

мощности, содержания меди, приведенных выше, и объемной массе 2,6 т/м3 прогнозные ресурсы

рудопроявления составляют: руды –260 млн. т, меди – 550 тыс. т. и золота при среднем содержании 0,15 г/т –около 40

т.

Tectoning

setting

The southern part of Valer'yanovskaya zone

ID 1853

Name Kirovskoe

Russian name Кировское

Country KAZAKHSTAN

Major Commodity Al, Ti

Deposit_Type Sedimentary stratiform

Deposit Size Large and very large Administrative

district

Aqtobe Oblysy

Geological settings and rocks

The weathering crust 10-15 m thick occurs on the basement rocks: shale (O) intruded bygabbro-amphibolite, diabase, porphyrite (C). Cretaceous continental deposits include 2 members: the lower one 15-20 m thick composed of feldspar-quartz sand with some pebble in the bottom and the uppeer member up to 35 m thick - variegated bauxite clay and bauxite, turning down the slope into coaly clay with

coal and bauxite lenses.

Geological age K1 Tectonic Zone Torgay West Wallrock

alteration

sideritization

Orebody morphology

The weathering crust 10-15 m thick - minimal thickness is at the rises and maximal - at the depressions of pre-aptian relif.

Major minerals gibbsite, siderite, kaolinite Minor minerals boehmite

Grade

(stone bauxite) SiO2 7.8%; Аl203 38.4 %; Fe203 17.2 % ; (soft) SiO2 11.8 %; Аl203 39.6 %; Fe203 8.6 %,, (clay-like): SiO2 9.9 %; Аl203 36.8 %;

Fe203 16.9 %

沉积型层控铁矿床

岩石类型：

地质时代：中生代，新生代{E3，J，K2}

矿体形态：菱铁矿，含铁绿泥石，含水针铁矿，赤铁矿, 磁铁矿, 假象赤铁矿, 石英, 氯酸盐, 方解石

围岩蚀变：氧化，卡瓦克

化学元素标志

主要矿物元素：Fe, Mn 次要矿物元素：V，Cu, Co 矿床规模：小型矿床

构造带：Torgay Central，Naryn，Teniz，Farghona North，Mangyshlak，Emba

构造分区：Kavak，Tashkumyr，Northern，Kempirsai

品位吨位模型：