RemixIconEx.System.share_circle

You're seeing just the function share_circle, go back to RemixIconEx.System module for more information.
Link to this function

share_circle(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.share_circle()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M11 2.05v2.012A8.001 8.001 0 0 0 12 20a8.001 8.001 0 0 0 7.938-7h2.013c-.502 5.053-4.766 9-9.951 9-5.523 0-10-4.477-10-10 0-5.185 3.947-9.449 9-9.95zm9 3.364l-8 8L10.586 12l8-8H14V2h8v8h-2V5.414z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}