rafMarkerRender.js

render() {
        return (

            <Expo.MapView.Marker
                key={this.props.key}
                coordinate={{
                    latitude: this.props.location.loc[0],
                    longitude: this.props.location.loc[1],
                }}>
                <FontAwesome
                    name='map-marker'
                    color={this.props.location.pinColor}
                    size={this.state.size}
                />
            </Expo.MapView.Marker>

        )
    }