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Econ
Tumc
nomic geo
co Mining
dg
ology and
District, C
Donald G
gstrachan@yah
USA c
d gold po
Cargo Mu
G. Strachan,
Box 4046,
hoo.com; donal
cell:+1 775 720
30
otential o
uchacho M
by
, Consulting
, Carson City, N
ld@geostracha
0-8894 Int'l c
June 20
of the Occ
Mountains,
g Geologist
NV 89702
an.com; www.g
cell:+1 604 505
11
cidental p
, Imperial
QP CPG
geostrachan.co
5-2495
patent gr
l Co, Calif
m;
roup,
fornia
Donald G. Strachan, Consulting Geologist Occidental patents, Imperial County, CA
Page 2 of 15 July 4, 2011
AbstractThe southeast-dipping Pasadena Shear Zone offers bulk-mineable economic gold potential within
the Occidental Group of nine, patented contiguous lode claims in the Cargo Muchacho Mountains. Finely stockworked and/or sheeted auriferous veinlets disseminated through the 80-foot average thickness of the Pasadena Shear combined with the occasion thick, equally high-grade veins, may create overall grades averaging 2 gpt (0.06 opt) Au in a manner similar to the nearby American Girl mine and the Oro Cruz deposit. Several similar shear zones may occur in a stacked and block-fault configuration within the Occidental Group.
Geologic potential along the northern segment of the Pasadena Shear is 7,300,000 tons containing 440,000 oz Au. This exploration potential occurs over a 2,200-foot strike length, where structural width may average 80 feet down at least 500 feet of dip length. With these dimensions, stripping ratio for an open-pit situation should be economic, subject of course to adequate feasibility studies after discovery and development. Additional segments of the Pasadena Shear Zone along structural strike in the southern portion of the Occidental Group have additional economic potential.
The low-angle Pasadena Shear Zone, one of a series of district-scale extensional faults related to regional detachments, may vary up to 140 feet in structural thickness, dips as much as 40º southeast, and projects northeasterly in outcrop and subcrop over at least a mile of strike length. Foliated medium-grained intrusives of the Tumco Formation form the hangingwall and footwall of the Pasadena Shear, along with minor irregular bodies of fine-grained, presumably Cretaceous, felsic intrusives.
Post-metamorphic biotite flooding along foliation planes and some vein margins is the most intense hydrothermal alteration observed during this four-day survey. Chlorite-clay alteration was also observed adjacent to some quartz veins. Observed mineralization included limonite after pyrite and other sulfides, and also minor copper oxides, in quartz veins and adjacent veins and fractures.
Donald G. Strachan, Consulting Geologist Occidental patents, Imperial County, CA
Page 3 of 15 July 4, 2011
ContentsAbstract 2
Contents 3
Introduction 4
Purpose and method 4
Property description 4
Ownership 4
History of the Tumco District and Occidental Group 4
District Geology 5
Economic geology of the Occidental Group 8
Discussion 9
Conclusions 12
Recommendations to the owners 13
References 13
Table 1 – Assays 15
Figure 1 - Location in Southeastern California 4
Figure 2 - Location near San Andreas Fault Zone 5
Figure 3 - Geology and location in Cargo Muchachos Mountains 5
Figure 4 - Location of Occidental Claim Group and May 17th waypoints (blue dots) 6
Figure 5 - Vein trace and sample locations, Dan’s Original Vein Prospect 7
Figure 6a - Occidental Group boundaries, all samples, and topography 8
Figure 6b - Occidental Group boundaries and assay values greater than 5 ppm Au 9
Figure 6c - Occidental Group claims, air photo, and samples greater than 5 ppm Au 10
Figure 7a - Au greater than 5 ppm Au - Pasadena Shear Zone looking South 11
Figure 8b - Au greater than 5 ppm and claim boundaries - Pasadena Shear looking South 12
aD2Opaoi6OvF
ttaoOsoshbata
dmAt
c
m
Donald G
IntrodPurpos
Dan accompaniedDistrict on 2011, to Occidental cpurposes. accessible seoutside of ntroductory
6,000 feet Occidental Gvisited and Figures 4, 5a
The auththe afternoonthree days deand samploutcrops, aOccidental Gsurroundingsobserve geolsample mihistorical boundaries oascertain tentime availablassay results
Proper
The Occdistrict in thmine (New GAu productiotakes approx
Owner
The Occcontact infor
History
High gramid-1800’s.
G. Strachan,
ductionseandmeth
and Judd the authorthe morningintroduce
claim groupOur initial
eries of worthe claim
vein is west-south
Group. Thsampled i
a, and 5b bel
hor and sonn of May 1etermining cling dumpand portal Group and s. Our primalogical charaineralized
workings of the Occid
nor and Au dle. Nevertheand publish
rtydescript
cidental Grouhe central CaGold Inc.) anon). Access
ximately 50 m
rship
idental Grourmation is: o
yoftheTum
ade veins in Unfortunat
Consulting
hod
dy Massr to the Tug of May their pate
p for evalual stop wasrkings on a
group. approxima
hwest of he area initis indicatedlow.
n Charlie sp7th and the
claim boundas, ore pcrops of the immed
ary intent waacteristics an
outcrops within
dental Groudistribution (eless, geolog
hed reference
tion
up consists argo Muchacnd a half mis to the Occminutes of d
up is ownedffice (909) 9
mcoDistric
the Cargo Mely, this earl
Geologist
Page 4
sagli umco 17th,
ented ation s an vein This ately
the ially
d in
pend next aries piles,
the diate as to nd to
and the
up to (Figure 6c). gic observaties are the ma
of nine concho Mountaile southeastcidental Gro
driving time f
d 100% by 987-6624; ce
ctandOccid
Muchachos wly activity w
of 15
Outcrop maions made dain basis of t
ntiguous patains, 18 milet of the reclaoup, via pavfrom Yuma,
Dan and Juell (951) 315
dentalGrou
were mined was abruptly
Figu
Occiden
apping was during this inthis report.
tented claimes southeastaimed Amerved highway Arizona.
udy Massagl5-8776; emai
up
by independended by an
ure 9 - Location
ntal patents, I
not attemptentroductory s
ms located int of the operrican Girl goy, and grave
li of Southeril judyjmass
dent Mexican attack by Y
n in Southeaster
Imperial Cou
July 4
ed during thsampling, al
n the Tumcorating Mesqold mine (42el the last fe
an nationals Yuma Indian
rn California
unty, CA
, 2011
he limited long with
o mining quite gold 28,000 oz ew miles,
a. Their et.
until the ns on July
1wMe1
abSY1iNtB
PGM
BbO
Donald G
17, 1781, wwomen andMining activestablishmen1823 (Califo
Americanafter the Mbecoming fSouthern PaYuma. Larg1890 to 19ntermittently
Names of ththe AmericanBlossom, Bu
Pot, ColoradGolden QuMadre and P
Several oBoy were opbrown, FigurOccidental G
Distri
Figure
G. Strachan,
when 50 mend children vity was nont of the Mornia Gold, 2
n miners entMexican Wfirmly estacific Railroage scale act916, from y in the year
he mines durn Boy, Ame
utterfly, Carg
do, Desert een, Guade
Padre, Ogilby
of these minperated as anre 4) domin
Group.
ctGeolo
e 11 - Geology a
Consulting
n were killetaken into
ot resumed Mexican Rep2011).
tered the disWar ended
ablished wad was comtivity contin1932 to 19rs after Worlring this eraerican Girl, Bgo Muchach
King, Goldeloupe, Lity Group, Pas
nes were re-n open pit. Lnate the sma
ogy
and location in C
Geologist
Page 5
d and 67 slavery.
until the public in
trict soon in 1848,
when the mpleted to nued from 941, and ld War II.
a included Big Bear,
ho, Coffee
den Cross, ttle Bear, sadena, Sove
-explored duLarge, reclaiall east-west
Cargo Muchach
of 15
ereign, Vitra
uring the 19imed, and de
valley a few
Fig
hos Mountains
Occiden
afax, and Wh
980’s, and thepleted heapw thousand
BaMuchaJurassiTumcoFormatof Crequartz (?) bassociaCretaceto cutintrusiv
Themost oangle eor moOn-goishear znorthwhigh-an
gure 10 - Locat
ntal patents, I
hite Cap.
he Americanp leach pads
feet north a
sement rocacho Mounic (?) gneiso Formatiotion is intruetaceous (?monzonite
biotite graated peeous (?) port all earlierve lithologie
e structuralof the rangeextensional re Tertiary ing listric zone strikesest to north
ngle northw
tion near San A
Imperial Cou
July 4
n Girl and Aand waste dand northwe
cks in thentains con
ss and schison. The uded by larg) hornblendand later Cr
anite bodiegmatite rphyritic aplir metamorpes.
l fabric une appears tofaults relatelistric detafaulting p
varying froheast. A
westerly fa
Andreas Fault Z
unty, CA
, 2011
American dumps (in est of the
e Cargo nsist of st of the
Tumco ge bodies de-biotite retaceous ies and
dikes. ite seems phic and
nderlying be low-
ed to one achments. produced om west-
Additional aults are
Zone
sM
pfhcstc
Donald G
secondary buMountains (R
Alteratiopreceded Crfractures andhydrothermaconsist of agspace betweetheir boundachlorite-clay
G. Strachan,
ut importantRozelle, 201
n is metamoretaceous (?d some vei
al biotite is cggregations oen. These o
aries are somy alteration an
Figu
Consulting
t component0, page 2).
orphic and la?) intrusion.ins, and appcommon in mof individuaoccurrences mewhat irregnd limonite
re 12 - Location
Geologist
Page 6
ts of the ove
ater hydrothe Gneiss, spear to be mesotherma
al, chaoticallof hydrothe
gular. Indivi(after sulfide
n of Occidental
of 15
erall extensio
ermal. Regischist and gassociated w
ally altered wly-oriented cermal biotiteidual quartze) in their ha
Claim Group a
Occiden
onal Tertiary
ional developgranitics arwith graniti
wallrocks. Scrystals up te might be cz veins someangingwalls
and May 17th w
ntal patents, I
y fabric of t
pment of gne hydrotheric and/or apSome of theto 3 mm acrcalled veins etimes have or footwalls
waypoints (blue
Imperial Cou
July 4
the Cargo M
neiss and amrmally altereplite dikes.
e coarse biotross with muor veinlets, up to severa
s.
e dots)
unty, CA
, 2011
Muchacho
mphibolite ed along Coarse
tite zones uch open although al feet of
ahsgbsrpCcqtiTOws1
nnumh
col
cv(C
Donald G
Judging and our historic worshears of allgold in the but low-anstructures responsible production sContinuous acrystalline, quartz veins the district ranches to sev
The single Original Prowhite, crscattered gre1.5 feet
northeast annorthwest, wup to 87 ppmmineralized ahangingwalls
The Orocurrently beiof 341,800 olate 2011.
Mesothercontaining hevery low silv(Rozelle, 20Cruz deposit
G. Strachan,
from our saobservation
rkings, veinl orientation
Tumco Dingle detach
have for
since the 19and disconti
mesothoccur throu
anging from veral feet in w
vein at spect (Figur
rystalline, ey metallic
wide, st
nd dipping swith assay m Au (Tablareas of the s of low-ang
o Cruz (Goling developeoz Au in 4,8
rmal mineraematite, mag
ver are assoc10, page 2).t strikes nort
Consulting
amples ns of ns and s host istrict, hment
been most
980’s. inuous hermal ughout
a few width. Dan’s e 5) is
with up to
triking
steeply values le 1). Dan’Tumco Dist
gle shear zon
lden Cross) ed by Lincol835,000 tons
alization at Ognetite, quarciated with ir Oro Cruz hwest and d
Geologist
Page 7
s Original atrict. Many one segments.
deposit, loln Mining Cs grading 2.2
Oro Cruz occrtz, mica, felron oxides. Mis a detachm
dips 25º to th
Figure 1
of 15
appears to bof these gold
ocated 3 milorporation.
20 gpt Au an
curs in multldspar, chlorMost gold is ment-related he south.
3 - Vein trace a
Occiden
be typical ofd-bearing ve
les northweLincoln has
nd intends t
tiple brown trite, and blue very fine wshear dippi
and sample loca
ntal patents, I
f the high-geins and vein
est of the Os announcedo restart dev
to brownish e copper oxid
with ±64% <1ing 25 degre
ations, Dan’s Or
Imperial Cou
July 4
grade quartz nlets seem to
Occidental Gd an inferred velopment d
gray siliceodes. Native 1 to 5 micronees. The tab
riginal Vein Pr
unty, CA
, 2011
veins in o occur in
Group, is resource
drilling in
ous zones gold and ns in size bular Oro
ospect
rZnFf
iala
Donald G
EconoA low-an
related to regZone, whichnortheasterlyFormation mfine-grained,
Post-mentense hydro
adjacent to limonite afteadjacent vein
G. Strachan,
omicgeongle shear zgional detachh may varyy in outcrop
makes up the , presumably
tamorphic bothermal altsome quart
er pyrite andns and fractu
Consulting
ologyoftzone (Pasadhments, passy up to 14p and subcro
hangingwaly Cretaceous
biotite floodteration obsetz veins. Od other sulfidures.
Figure 14a - O
Geologist
Page 8
theOccidena Shear Zses through t40 feet in sop over at lll and footwas, felsic intru
ding along ferved duringObserved mdes, and als
Occidental Gro
of 15
dentalGZone), part the center ofstructural thleast a mileall of the Pausives.
foliation plag this survey
mineralizationo minor am
up boundaries,
Occiden
Groupof series off the Occidehickness, di
e of strike leasadena Shea
anes and somy. Chlorite-cn during thi
mounts of cop
, all samples, an
ntal patents, I
f district-scantal Group. ips 40º souength (Figurar, with mino
me vein maclay alteratiois May, 20pper oxides,
nd topography
Imperial Cou
July 4
ale extension The Pasade
utheast and re 6c). Theor irregular b
argins was on was also 11, survey, in quartz v
unty, CA
, 2011
nal faults ena Shear
projects e Tumco bodies of
the most observed included
veins and
tovspo7
gbdm
Donald G
A total othis survey wor filled intevalues in thesamples assappm Au. Goof quartz vei7).
DiscusOnce the
general geolbetter ascertdetermine thmineralizatio
G. Strachan,
f 37 samplewere analyzeentionally bye workings fayed over 3.0ld values seein material fr
ssione location anogy of knowained, the phe tenor ofon, alteration
Figu
Consulting
s taken fromed for Au any absent mifor their anti0 ppm Au. Tem to increarom dumps a
nd boundariewn gold occprimary purpf gold withn, structure,
ure 6b - Occide
Geologist
Page 9
m mine portand Ag (Figurners throughicipated retuTen samples
ase with the along the tra
es of the Occcurrences hadpose of our in the largeand litholog
ntal Group bou
of 15
al ore piles, mre 6a and Tabhout this paurn. Au asss assayed ovlimonite (aft
ace of the Pa
cidental Groud been madplanned fouer volumes ies.
undaries and as
Occiden
mine dumpsable 1). Mosart of the disay values raver 10.0 ppmfter sulfide) aasadena Shea
up had beende, and the eur-day surve
of historic
ssay values grea
ntal patents, I
s, portal cropst portals andstrict, obvioanged up to
m Au. Two sabundance, ear Zone (cov
n determinedextent of hisey became acally-mined
ater than 5 ppm
Imperial Cou
July 4
p, and outcrod pits were cously to pres
87.7. Sixtesamples excespecially inver and Figu
d, observatiostoric miningapparent. W
zones of f
m Au
unty, CA
, 2011
op during collapsed serve the een of 37 ceeded 34 n samples ures 6 and
ons of the g activity
We would favorable
e6tos
wTmso
Donald G
In the Tuextensive, lo6,114,286 totons gradingoutcrops andsampled.
At least was recognizTip Top, andmuch as 140scattered eveof the Pasade
G. Strachan,
umco Districow-angle, mons grading 2
g 2.20 gpt [d mine dum
one well-dezed during thd Delphi pat0 feet. Sevenly over a sena Shear m
Fig
Consulting
ct, prime canoderate-grad2.38 gpt [0.0[0.07 opt] A
mps in the vi
veloped struhis survey. tent claims (venteen of tstrike length
may average a
gure 6c - Occide
Geologist
Page 10
ndidates for de shear zon07 opt] Au) aAu) deposit.icinity of th
uctural shearThe Pasade
(Figures 6c the 30 sampof 2,200 fee
about 80 feet
ental Group cla
0 of 15
geologicallyes similar toand the prop With this
he Occidenta
r of permissena Shear prand 7c) andples were taet, and they t over this ho
aims, air photo,
Occiden
y favorable vo the Americposed Oro Crs structural al claim gro
sive size androjects throud appears to aken along averaged 6.9orizontal dis
and samples gr
ntal patents, I
volumes are can Girl minruz (341,800model in m
oup were loc
d geometry, ugh the Pasa
have a structhe surface
92 ppm Au. stance.
reater than 5 pp
Imperial Cou
July 4
planar, horine (428,000 0 oz Au in 4
mind, 30 mincated, obser
the Pasadenadena, Roberctural thickn trace of th Structural t
pm Au
unty, CA
, 2011
izontally-oz Au in
4,835,000 neralized rved, and
na Shear, rt E. Lee, ness of as his shear, thickness
sTlaba6
sHvpspa
Donald G
Fourteensamples werThese sampllater patents.average gradbetter than 1and the north6c) before W
High-grastrike and diHenrietta lodveinlet stockpostulated 8substantiallypostulated ecaccessible to
G. Strachan,
n of the Pasade taken withles were from. Their averde for veins c7 gpt (0.5 ophernmost po
World War II
ade veins simip extensionsdes, and ben
kworks and/o80-foot averay to overall conomic pot
o historic hig
F
Consulting
dena Shear shin the boundm all the sigage value ofcontained wpt) Au were rtions of the.
milar to thoss of the Pasaneath unpator sheeted auage thickneAu grade w
tential will bgh-grade und
Figure 15a - Au
Geologist
Page 11
samples carrdaries of thegnificant porf 9.10 ppm (
within the Pasundoubtedly
e Occidental
se historicalladena Shearented grounuriferous veiss of the P
within the sbe especiallyderground mi
greater than 5
1 of 15
ried more thae Robert E. Lrtal crops, du0.3 opt) Au sadena Sheay mined fromand Tip Top
ly mined undr within the nd east of Pinlets may a
Pasadena Shhear, creatin
y high in areiners.
ppm Au - Pasa
Occiden
an 1 ppm AuLee or Pasad
dumps, and omay represe
ar Zone. Mam the southep lodes throu
derground mOccidental,
Pasadena lodalso be dissehear Zone. ng bulk-mineas of the sh
adena Shear Zon
ntal patents, I
u. Twelve odena patentsore piles on ent a lower lany larger veernmost portugh the Occ
may be presePasadena, T
de (Figure 6eminated thr
These veinneable econhear faulted
ne looking Sout
Imperial Cou
July 4
of the Pasades (Figures 6c
the Shear wlimit for the ein segmentstions of the Pcidental Min
erved along Tip Top, De6c). Fine aoughout mu
nlet masses omic potentoff or other
th
unty, CA
, 2011
ena Shear c and 7c). within the
expected s grading Pasadena e (Figure
unmined elphi, and auriferous uch of the
will add tial. This rwise less
gd2GPptb
ad
Donald G
ConcluThe bulk
gold potentidisseminated2 gpt (0.06 oGiven this gPasadena Shpotential of tthese dimensbe too onerou
Additionalong structudip across no
G. Strachan,
usionsk-mineable cal within th
d through theopt) Au in agrade, the mhear Zone, anthe northern sions, strippius, subject o
nal portions ural strike intortherly bloc
Figure 16b
Consulting
haracter of the Occidentae 80-foot ava manner simminimum 2,2n average 50half of the O
ing ratio for of course to a
of the Pasadto the southe
ck faults of v
b - Au greater t
Geologist
Page 12
the southeasal Group.
verage thicknmilar to the 200-foot stri00 feet dip lOccidental G
an open-pitadequate fea
dena Shear ern portion ovariable throw
than 5 ppm and
2 of 15
t-dipping PaFinely stockness of the PAmerican Gike length olength, and 8Group is 7,30t situation unasibility stud
Zone with of the Occidew.
d claim boundar
Occiden
asadena Sheakworked anPasadena ShGirl mine anof the miner80 feet of av00,000 tons nder present
dies after disc
equal econoental Group,
ries - Pasadena
ntal patents, I
ar Zone offend/or sheetedhear may crend the Oro Cralized northverage structcontaining 4
t economic ccovery and d
omic potenti, and further
Shear Zone loo
Imperial Cou
July 4
ers the best ed auriferouseate grades aCruz deposithern segmentural width,
440,000 oz Aconditions shdevelopment
ial may be pr east down s
oking South.
unty, CA
, 2011
economic s veinlets averaging t (above). nt of the geologic
Au. With hould not t.
projected structural
Donald G. Strachan, Consulting Geologist Occidental patents, Imperial County, CA
Page 13 of 15 July 4, 2011
RecommendationstotheownersPhase One steps should be accomplished to prepare the Occidental Group for discovery drilling: 1)
peripheral and internal unpatented claims should be staked, 2) outcrop geology should be thoroughly mapped at an appropriate scale, 3) a comprehensive rock chip and soil sampling program should be completed, and 4) a geophysics program adequate for projecting the Pasadena and other, potentially stacked, shear zones should be completed. A budget to accomplish this preparatory work over a six-month period should be considered.
Once strike, dip, and depth of the Pasadena Shear and similar structures are mapped and projected beneath the surface, a Phase Two discovery drilling program to intersect mineralized structures should be designed, budgeted, and carried out. A Phase Three drill program would follow to infer economic resources.
ReferencesBooth & Sons, 1920, The Occidental group of mines: private report, 1 page.
California Gold blog, 15 May 2011, Spanish miners: http://www.goldcalifornia.net/tag/spanish-miners-in-california/
Decker, C., 1 July, 1939, Letter to Henry Merdinck relating mine activities and including 15 July Koppea report.
Dillon, J.T., 1976, Geology of the Chocolate and Cargo Muchacho Mountains, southeastern-most California: Santa Barbara, University of California, Ph.D. thesis, 405 p.
Duke, N. and M. Pazner, March 2008, Field Trip – Gold mineralization related to extensional tectonics, Nevada, Arizona, and SE California: University of Western Ontario website http://instruct.uwo.ca/earth-sci/fieldlog/cargo/indexcargo.htm#day5
Henshaw, Paul Carrington (1942), Geology and mineral resources of the Cargo Muchacho Mountains, Imperial County, California: California Journal of Mines and Geology, California Division Mines (Report 38): 117.
Koppea, A.D., 15 July, 1925, Report of examination of the Occidental group of mines in the Cargo Muchacho mining district, Imperial County, California: private report, 5 pages.
Lashar, M., 30 April 1940, Report on Pasadena Mine, Ogilby, California: 1108 Park Central Building, Los Angeles, California, Vandike 0923, 7 pages.
Morton, P.K., 1977, Geology and mineral resources of Imperial County, California: California Division of Mines and Geology, County Report 7, 104 p., scale 1:125,000.
Owens, E.O., and Hodder, R.W., 1994, Aluminosilicate mineral assemblages in the Cargo Muchacho Mountains, southern California: metasomatism and gold concentration associated with magmatism and deformation in mesozonal environments: Canadian Journal of Earth Sciences, v. 31, p. 310-322.
Perez, J, 14 December, 2009, Press release: USA Uranium Acquires Pasadena/Occidental Mine and Consummates Comstock Royalty LLC Financing: Marketwire http://www.marketwire.com/press-release/usa-uranium-acquires-pasadena-occidental-mine-consummates-comstock-royalty-llc-financing-1180440.htm.
Donald G. Strachan, Consulting Geologist Occidental patents, Imperial County, CA
Page 14 of 15 July 4, 2011
Perez, J, 29 March 2010, Entry into definitive agreement: Form 8-K: Securities and Exchange Commission, Washington, D.C., 4 pages.
Rozelle, J.W., 21 September 2010, 43-101 technical report, Oro Cruz gold project resource estimate, Imperial County CA, USA: for Lincoln Mining Corporation, 116 pages, 28 figures, 29 tables, 1 appendix.
Strand, R.G., 1962, Geologic map of California: San Diego-El Centro sheet: California Division of Mines and Geology, scale 1:250000.
Van Wormer, S.R and J.D. Newland, Spring 1996, The History of Hedges and the Cargo Muchacho Mining District Parts I and II: The Journal of San Diego History, Volume 42, Number 2.
Donald G
Table
G. Strachan,
1–Assa
Consulting
ays
Geologist
Page 155 of 15
Occidenntal patents, IImperial Cou
July 4
unty, CA
, 2011
