10
.2. Alkaline. river-bed and pit place
rs
............................................................................. 332
10
.3
Role
оС
а
гаН
in
рlасег
foгrnation
................................................................................ 338
10.4
.
Vаl1еу
placers and conditions
Сог
their
foгrnation
....................................................... 340
10
.5.
Lowlапd
placcrs ........................................................................................................... 386
10
.6.
Pl
acers in the areas
оС
апсiепt
glaciation .................................................................... 390
10
.7.
Т
е
ггасе
placers and
соттоп
сопditiоп
Сог
their
fогrnаtiоп
...................................... 396
10
.8. Placers
оС
ancient elevatcd
пуег
systems .................................................................... 409
11.
Соа
(а!
( Jit1oral)
рlасег
.......... ........ .......... ....... ............ ...... ...................... ..... ........... ..........
41
1
11
.1. Gel1eral remarks ...........................................................................................................
411
11
.2. Bcach facies
of
coasU\1
рlзсеrs
..................................................................................... 413
11
.3.
Teгrac
e
placers ............................................................................................................. 417
1
1.4
. Spread
оС
sea
littoгal
placers ........ ....................................................... ......................... 418
11
.5. L3ke placers ................................................................................................................. 419
12
. Arid field placers .................. ...... ...................................... ............................. ....... ................ 419
13
.
Оое
оС
feasibIe pattern for diamood placer formatioo ........................................................ 423
14
.
Techпogeoou
placers ......................................................................................................... 424
14
.1.
Оtlтр
рlзссrs
............................................................................................................... 426
14
.2.
Сеliс
placers ................................................................................................................. 428
IV.
ЕА
LITHOGENESIS
AND
PLACER
FОRМAПОN
..
........ ..............
.. ..
..
............. 430
15. ubmarioe placer formatioo .................................................................................................. 430
15
.1.
G
е п
е
гаl
гcmarks
........................................................................................................... 430
15
.2.
Туре
оС
helves ........................................................................................................... 432
15
.3.
11
elf placers ................................................................................................................. 436
15
.4.
11
з
г
ас
tсгi
tic
fеашгеs оС тiпегаlоgу
Сог
sllbmarine placers ... .................................. 439
15
.5.
Р
а
н
е
т
оС
stlbmarine
рlасег
locatiol1 ..........................................................................
441
V.
В
т
СЕ
СОМРО
IТЮ
.
AGE
AND
ТYPOLOGY
OF
РLЛ
ER ................ 442
16
.
ттоо
feature
оС
рlасег
ub
(апсе
сотро
itioo .............................................................. 442
16
.1.
Gгantllar
companents
оС
tlbstance composition ......................................................... 442
16
.2.
Р
ephitic
сотрапеп!
.................................................................................................... 444
16
.3.
Rock
-
foгrnil1g
endogenous mineraJs
of
psammitic
сотрапепt
................................... 446
16.4. Placer-forming
mineгal
оС р
ammitic
сотропеп!
...................................................... 448
16
.5.
Ore
-
foгrning
mineгals
оС
pelitic
companent
................................................................ 450
16
.6. Space (astral)
рlасег
сотрапепt
................................................................................
451
16
.7. Information factor
оС
placer-foгrning
mil1erals ............................................................ 452
17. Mioeralogical features
оС
рlасег
..
...................... ............ ...... ................ ...... ...... ...... .............. 463
17
.1.
Mineгalogy
ofp
latintlffi/ metal placers ......................................................................... 463
17
.2.
Mineгalogy
ofgold
-bearing placers ............................................................................. 470
17.3
.
Mineгalogy
оС
tin-bearing placers ................................................................................ 488
17.4. Mineralogy
оС
titanium, titanitlffi/ zircon and
гагс-теtзl
placers ................................ 490
17
.5. Mineralogy
оfdiатопd-Ьеаriпg
placers
..
.................................................................... 496
18.
Лgе
оС
placer depo its .............................. ...................................................................... .......
501
18
.1 The concept
оС
рlасег
аве
........................................................................................ .....
501
1
8.
2.
Reli
ef and
зgе
оС
placers .............................................................................................. 503
1
8.
3.
Foгrnation
and
fзсiеs
compasition
оС
depasits and
рlасег
аве
.................................... 507
1.4
.
onn
ec
tiol1
of
the concepts
оС
placer and
рlасег
depa
it ...........................................
51
О
19.
Тypology
оС
placers ............................................................................................................... 514
19
.1. Basic concepts
оС
thc typology ............ ....................... .................. ........... .................... 514
19
.2. Genctic eries
оС
placers .............................................................................................. 515
19
.3.
Moгphological
series
ofplaccrs
.................................................................................. 516
19.4.
Аве
series
оС
placers .................................................................................................. 517
Уl
.
РЕ
1 L
PROBLEM
..............................................................................................................
51
8
20. Geochemical evolutioo
оС
рlасег
.......................................................................................... 518
20
.1.
Geneгal
гcmarks
............................................................................................................ 518
20.2. Mcchanisms
оС
еlетеп!
migration............................................................................... 520
20
.3. Geochemical
рlасег
zoning........................................................................................... 522
20.4.
R
е
lзtiопs
of
clt1stogenic and chemogenic
рhзsеs
of
рlасег
foгrnation
........................ 526
21. Mioeral ymmetry
'п
оге
а
ociatioo aod placers .............................................................. 528
22. U1tra-thio cla
е
оС
pl2cer-formiog mioeraJ ...................................................................... 532
23.
QuаоШаtivе
ioterpretatioo
оС
differeot phases
оС
placer formatioo .................................... 537
Сопсlt1
ion ...... ... ... ..................................................... ...... ....... ............ ...... .......... ...... ....... .... ...... ..... ..... 548
T
e
гrninology
gепегаtеd
Ьу
the atllhotlf
Сог
the Geology .................................................................... 553
Refeгcnces
........................................................................................................................................... 554
575