RemixIconEx.System.login_circle

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

login_circle(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.login_circle()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M10 11V8l5 4-5 4v-3H1v-2h9zm-7.542 4h2.124A8.003 8.003 0 0 0 20 12 8 8 0 0 0 4.582 9H2.458C3.732 4.943 7.522 2 12 2c5.523 0 10 4.477 10 10s-4.477 10-10 10c-4.478 0-8.268-2.943-9.542-7z" />
</svg>

example usage

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