BREITENBRUNN LICENCE

Two deposits occur within the same stratigraphic package that hosts Tellerhäuser – Antonsthal and Breitenbrunn:

Deposit
Tonnes​Grade​Contained Metal​
Breitenbrunn Tin22,300,0000.25%55,750
Antonstahl Tin14,700,0000.19%27,930
Antonsthal Tungsten6,200,0000.37%22,940
Total Tin37,000,0000.23%83,680
Total Tungsten6,200,0000.37%22,940

These have only been explored using very widely spaced drilling (generally between 200m and 800m spaced drill-holes. However, the total global geological resources (non JORC) estimated in GDR times is about the same grade as the global resource at Tellerhäuser using a 0.0% Sn cut-off i.e. 71.4Mt @ 0.21% Sn (147,000t tin). Based on recent work at Tellerhäuser, it appears that higher grade pods of mineralisation (plus 0.5% Sn) are generally between 200m and 400m diameter. Given the drill spacing at Antonsthal and Breitenbrunn is in this order of magnitude, even a single higher grade drill intercept could potentially represent a high grade pod similar to those found at Tellerhäuser.

Same Stratigraphic Package, Within 5-10km of Tellerhäuser

Significant other metals – Zn, Cu, Pb, In (from pXRF)

BREITENBRUNN DEPOSIT DETAILS

 Area
[km²]
Drill
Spacing
[m]
CategoryNumber of
Drills
Meter
Drilled
[m]
By Products Ore Minerals Geochemical Work Processing
Antonsthal 3400 x 400
To
800 x 800
P28 17.520 0 Zn, Cu, Pb, In, Ge,
Bi, Ag, Cd, Au
Scheelite
Cassiterite
Magnetite
Wolframite
Sphalerite
Chalkopyrite
Roquesite?

Cassiterite
Magnetite
Wolframite
Sphalerite
Chalkopyrite
Roquesite?
spektral analysis
(every 5 m of drill core, in
prospective parts every
0,5 to 1 m)
Breitenbrunn2200 x 200
To
400 x 400
P45W, Zn, Cu, Pb, In,
Ge, Bi, Ag, Cd, Au
Cassiterite
Sphalerite
Magnetite
Chalkopyrite
Scheelite
Wolframite
Roquesite?
spektral analysis
(every 5 m of drill core, in
prospective parts every
0,5 to 1 m),
channel sampling
in St.Christophmine (ca.
450 samples)
Fe, Zn, Cu
(Sulfide Flotation,
Magnetic
Separator,
Wet Processing)

GDR era resource estimate (non JORC): 22.3Mt @ 0.25% Sn (55,000t tin)

Mined during 16th and 17th Centuries for tin and during 19th and 20th Centuries for iron.

Several plus 1% drill intercepts in very wide spaced drilling (any one could represent a high grade pod at Tellerhäuser):

• C1 0.7m @ 2.42% Sn from 97.3mbs (metres below surface)
• Z210 1.2m @ 0.96% Sn from 136.5mbs plus 1.3m @ 0.88% Sn from 138.2mbs
• Z218 1.2m @ 1.45% Sn from 188.3mbs
• F5 2.2m @ 1.84% Sn from 74.8mbs

Channel sampling underground during the 1930’s returned:

• 67m strike averaging 1.75m thickness @ 1.28% Sn
• 89m strike averaging 1.54m thickness @ 1.05% Sn
• 22m strike averaging 1.68m thickness @ 2.86% Sn
• 131m strike averaging 1.67m thickness @ 0.44% Sn

Potential for 4-5 pods (maybe more) of plus 0.5%-1.0% Sn mineralisation

Underground pXRF measurements show high Zn, Cu and In (to >100ppm)

Visible sphalerite (zinc ore) and chalcopyrite (copper ore) seen in the walls of the underground mine (St Christoph)

Multi-element deposit similar to Tellerhäuser

ANTOSTHAL DEPOSIT

GDR era resource estimate (non JORC): • 14.7Mt @ 0.19% Sn (28,000t tin); 0.76% Zn (111,000t zinc); 0.14% Cu (20,600t copper); 0.21% Pb (30,900t Pb) • 6.2Mt @ 0.37% WO₃ (23,000t WO₃) Has been mined on a small scale during the 15th and 16th centuries Several interesting drill intercepts for tin in very wide spaced drilling (wider than the mineralisation at Tellerhäuser!) probably in two distinct horizons (110-210mbs and 550-650mbs): • z413/76 0.5m @ 0.41% Sn from 114.8mbs (metres below surface) plus 1.8m @ 0.27% Sn from 631.7mbs • z410a/76 1.1m @ 0.27% Sn from 208.1mbs • z422/76 0.7m @ 0.27% Sn from 567.9mbs • w526/77 2.1m @ 0.22% Sn from 611.6mbs However, the main potential here appears to be for tungsten (again in two distinct horizons, one near surface and the other 500-550mbs): • z415/76 0.8m @ 1.64% WO₃ from 527mbs • z417/76 0.5m @ 0.59% WO3 from 520mbs • z433/76 1.5m @ 0.53% WO3 from 12.4mbs • Z432/76 0.7m @ 0.33% WO3 from 15.5mbs

Apart from the main deposits, significant exploration potential can also be seen at:

• Peripheral to Tellerhäuser
• Additional layers at Tellerhäuser
• Faulted off continuations of Tellerhäuser
• Within the same stratigraphic horizon as Tellerhäuser, Breitenbrunn and Antonsthal, in particular between these deposits where some low grade tin and tungsten intercepts have been recorded
• Within a second prospective stratigraphic horizon that hosts the Pöhla Globenstein deposit (excised from ASM’s EL)
• Within granite underlying these deposits