One of the top chartists, Thomas Bulkowski likes the descending triangle as a good trading signal.
http://thepatternsite.com/dt.html Search for descending triangle to see the parameters that he uses.
Let's take a look at the chart of Minaurum:
As you can see the bottom horizontal line sits at 26 cents, while the peak price is at 38 cents. Using Bulkowski's projected price level, were MGG to break out of its descending triangle, we could see a move to 48 cents. Also note that this triangle meets many of the factors that Bulkowski likes to see: 1) the price touches the two lines at least twice with distinct peaks and valleys and 2) the price movements fill the triangle, i.e., lots of ups and downs.
Mind you, the descending triangle gives a trading signal when the price moves below or above one of the trendlines. Obviously, I'm biased to seeing it move up, not down, based mainly on the expectation that the recently announced drill program on its Alamos silver project will deliver some excellent grades and widths of silver.
Keep in mind that Dr. Peter Megaw, of MAG Silver, is on the board of MGG and he's on record saying that he feels that Alamos offers tremendous potential given modern exploration techniques, the historical mining and the recent sampling that has been done.
At least keep MGG on your stock screen--if it does breakout, you have a clear technical signal to trade.
Disclosure: I am long MGG.
UPDATE as of August 17, 2017:
The breakout appears pretty solid, so the 48-cent target is still in play. RSI is rising and the MACD is strong as well and nowhere as overbought as it was in April of this year.