From Imperial Minerals Wiki
<script>
function initMap() {
var coordinates = '{{{GPS}}}';
coordinates = coordinates.split(',').map(function(coord) {
return parseFloat(coord.trim());
});
var mapOptions = {
center: { lat: coordinates[0], lng: coordinates[1] },
zoom: 15
};
var map = new google.maps.Map(document.getElementById('map'), mapOptions);
var marker = new google.maps.Marker({
position: { lat: coordinates[0], lng: coordinates[1] },
map: map,
title: 'Marker Title'
});
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIrgq5dZQ8haJIfKHbGco90OpDwYLiXwA&callback=initMap" async defer></script>