JUAN TREMOLERAS 
194 PIEDRAS 
IVIOISJTEIVIDEIO 
(URUGUAY) 
¥ 
Descriptive price ■ list of the collections of rocks and 
minerals from Argentina and Uruguay. 
URUGUAY 
1) A sistematic collection of rocks and ores of the Republic of Uruguay. 
This collection contains chiefly saiDples of crystalline schists^ gneiss^ grani- 
te^ syenite,, gabbro^ diorite,, diabase^ quartz ~ porphyry , basalt^ andesite^ 
liparite and associated tuffs. Special attention is called to the chalcs 
occurring in the ancient schists and the ore-deposits^ as for instance: gold, 
copper, lead, iron etc. A very remarkable occurrence is represented by sam- 
ples of corundum. The phenomena of contact and regional metamorfism are well 
displayed. The final numbers of this collection consist, of the sedimentary 
rocks lying upon the ancient cristalline platform. 
A very remarkable and interesting collection of handsome and typical 
specimens of a regular size. 
195 especimens of size 9 x 13 cm for $ oro 170 
310 ” ” ” 7 X 9 ” 140 
This collection has been described geologically by Professor K. Wal- 
ther of Montevideo and petrographi cally by Professor E. Weinschenk of Munich 
in a German geological review. For informations please apply to Professor 
Weinschenck in Munich. 
ARGENTINE 
2) Deposits of archean and postarchean rocks (silurean?) in co ntact^ with 
igneous rocks from the Sierra of Cordoba. 
Cristalline chalk in contact with aplite, granite, pegmatite, sye- 
nite with titanite, gabbro, diorite, lamprophyre, porphyrite, amphibolite, 
gneiss, crystalline schists, amphibole schists, hornfels, epidotite, gra- 
natite, opal, etc. etc. 
Crystalline chalk with fine crystalls of garnet, epidote, diopside, 
mica, wollastoni te , chondrodite, graphite. Further Iceland double - ref rac- 
ting spar, calcite, etc. 
1) A collection of beautiful and carefully selected specimens for mu- 
seums . 
48 
specimens 
of size 14 
X 
16 
up 
to 
40 
X 
40 
cm . 
for $ 
oro 
400 
38 
» 
>> 
» 11 
X 
16 
» 
» 
30 
X 
40 
» 
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>> 
» 
300 
35 
» 
» 
» 10 
X 
10 
» 
» 
35 
X 
35 
» 
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105 
35 
» 
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» 11 
X 
14 
» 
» 
18 
X 
30 
» 
>> 
» 
» 
85 
A collection of 
190 
specimens < 
of size 
! 9 
X 
13 
» 
» 
» 
» 
190 
135 
» 
» 
» 
9 
X 
13 
» 
» 
» 
» 
135 
168 
» 
» 
» 
7 
X 
9 
» 
» 
» 
» 
100 
85 
» 
» 
» 
7 
X 
9 
» 
» 
» 
50 
These rocks illustrate in an excellent ma.nner the regional as well as 
contact metamorfism, having been described in the Anales del Ministerio de 
Agricultura de la Republica Argentina, Seccion Geologia, Boletin N.'’ 7, Serie 
B, Geologia: Las cales cr i stal ino-granulosas de las Sierras de Cordoba y sus 
fenomenos de contacto. Por el Dr. Roberto Beder, 1913. The chief work on these 
deposits is now prepared by Dr. Beder and will soon be ready for publication. 
Besides, these deposits have been described in 1905 in the same Anales, Sec- 
cion Geologia, Tomo I, N.” 3, : Constitucion geologica, productos minerales de 
aplicacion de la Sierra de Cordoba. Por el Dr. Guillermo Bodenbender. 
